1957 Lincoln Wheat Cent Errors, Varieties, and Values

1957 Lincoln Wheat Cent Errors, Varieties, & Values

1957 Lincoln Wheat cent errors and varieties exist!  For instance, this 1957-D Lincoln wheat cent displays a repunched mint mark or RPM.  I got this one online via Coppercoins auction channel.

1957-d penny error

Furthermore, “Looking Through Lincoln Cents” is authored by coin errors and varieties specialist Chuck Daughtrey.  In other words, it was he who noted the die markings on this rare and valuable collectible coin.

Moreover, die markings display a split lower serif, indicating a repunched mint mark, die chips in the nine and five, and a die scratch above the one and nine.  Additionally, a die crack is visible across Lincoln’s forehead.

1957 wheat penny error value
1957 D Lincoln Wheat Cent Reverse
Repunched Mint Mark (RPM)

“A repunched mint mark variety is generated when the letter punch used to punch the mint mark into the working die leaves two or more offset impressions.”  – error-ref.com

Furthermore, mint mark impressions almost always overlap.  “A totally separate secondary mint mark is a rarity, and therefore a very valuable penny.  The era of RPM’s ceased in 1989 when the U. S. Mint began placing the mint mark on the master die instead of punching the mint mark into the working die.”

1957 Penny Values

Wheat cents are worth at least two cents each because they’re primarily composed of copper.  Always be on the lookout for a repunched mint mark on Lincoln wheat cents! RPM pennies are collectible coins.

Furthermore, the less worn a coin is the more it becomes worth.  In other words, value appreciates over time whether a wheat cent is a die variety, an error coin, or neither. 

1957 Lincoln Wheat Cent Values

For instance, a 1957-D 1C graded MS67+ RD, sold at auction for $6,600.00.  A 1957 wheat cent graded MS76+ RD, sold at auction for $13,800.00.

1957 D Lincoln Wheat RPM pennies sell in raw condition between $5 and $20.00 on Ebay and other online coin shops, such as lincolncent.com.

1957 Wheat Cent Doubled Die Varieties & Errors

Additionally, rare specimens of 1957 wheat cent doubled die varieties exist! If you’ve found a 1957 penny, then compare it to the listings available at coppercoins.com,  varietyvista.com,  and/or doubleddie.com.

Additionally, watch the video above as Mr.Chuck Daughtrey examines this 1957 wheat penny with his microscope.  Note coin number 8 of reveal #305 at 14 minutes 15 seconds in.

Next, check out a 1989 Lincoln Memorial Cent Mint Error.   This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

2021 Lincoln Shield Cent Struck Through Error Coin

2021 D Lincoln Shield Cent Struck Through Mint Error

2021 D Lincoln shield cent errors and varieties exist.  For instance, observe this 2021 struck-thru error penny.   Furthermore, 2021 was a year the mint produced various coin errors.   Moreover, a mint error coin is an error coin produced at the mint.  Check out this struck-through debris error in the image below. 

2021 struck through cent penny error

Additionally, “struck through metal wires get struck into coin planchets.  As a result, it left thin incuse impressions, which are either straight, kinked, curved, worm-like, or sinuous.” – error-ref.com

Furthermore, coinauctionshelp coin forum helped to attribute and suggested the cent was struck-through thread, or a bristle wire.  Additionally, a member verified via cointalk.com. 

Coin Help Forums

Groups and forums like those listed above are extremely helpful for any new coin collector.   Furthermore, even experienced numismatists learn something new every day.

2021 Lincoln Shield Penny Values

Moreover, values vary and may increase or decrease over time.  The highest grade a coin receives is a 70.  The lowest population of the coins with the highest grades are the most valuable. 

Furthermore, the best way to find uncirculated 2021 penny errors and varieties is by searching through uncirculated original wrapped bank rolls. Don’t forget to check all 2021 mint sets!  However, a penny doesn’t have to be an error or variety to be valuable. A flawless coin in pristine condition has the most eye appeal.

2021 Shield Cent Values

For instance, a 2021-D 1C Shield cent graded MS66RD, sold at auction for $75.00.  Furthermore, a 2021 1C Shield cent graded MS66RD, sold at auction for $21.00.  Additionally, Ebay’s sold listings indicate that 2021 penny errors are still a hot commodity.  For instance, the major die break errors valued at $100.00 and up!

2021 Lincoln Cent Die Varieties

2021 doubled die variety coins with pictures to compare are listed via reputable sites like doubleddie.com and coppercoins.com.   Furthermore, 2021 penny doubled die varieties are available via varietyvista.com.   

2021 spiked head die crack cent penny

Check out a 2014 Lincoln Cent Clashed Die Error next! Additionally, observe a 1970 doubled die obverse Lincoln penny I obtained from a coin auction!  Finally, this website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

1973 Lincoln Cent Errors, Varieties, & Values

1973 Lincoln Cent Errors, Varieties, & Values

1973 Lincoln cent errors and varieties exist!  First, all 1973 Lincoln cents are worth at least twice their face value due to their copper content.  For instance, 1973 pennies are 95% copper.  Furthermore, the one examined in this article displays a spiked head die crack error.

1973 Lincoln Cent errors
Arrow notes the "spiked head" die crack on a 1973 D Lincoln cent
1973 Lincoln Cent Values

Moreover, 1973 pennies in pristine condition increase in value.  For example, an uncirculated 1973 Lincoln cent graded 67+ RD, sold at auction for $3,850.00. 

Furthermore, a 1973-D 1C graded MS67RD, sold at auction for $4,994.00.  Any pennies with the lowest population of the highest grades is how profit is made in the coin industry.  A coin in flawless condition drastically increases its value.  However, a die variety generates even more profit.  

1973 Lincoln Cent errors list

Additionally, a 1973 Mint Set is selling between ten and twenty dollars on Amazon.   Furthermore, check out the auctions on Ebay.  These are the best way to find coins that increase the chances of getting the highest grade, whether they have errors or not.  

If you can find a coin that turns out to have the highest grade and is a variety or mint error, it would be like winning the coin lottery!    A teenager with a keen eye once found a cent worth a million dollars in their lunch money!
1973 d penny
1973 Doubled Die Varieties

Furthermore, 1973 Lincoln cent doubled die varieties exist!   For instance, listings with photos are available at doubleddie.com.   Additionally, there are more listings of examples with photos to compare at coppercoins.com, and varietyvista.com. 

Additionally, tune into and listen to Charles Daughtrey, author of “Looking Through Lincoln Cents,” as he searches through 1973 D pennies from an original bankroll.  Feel free to subscribe and join in any auctions for the opportunity to get rare doubled die variety pennies for a reduced price.

1973 penny error list
Arrows note a die chip and die scratches on the reverse of 1973 D Lincoln cent

Subscribe to Chuck Daughtrey, also known as Coppercoins, on Youtube, where you can register to bid for coins, and then tune in to his channel for live auctions and more mint roll reveals.  You can also keep up with current listings of coins for sale by visiting Coppercoins Ebay store.

1973 Pennies a Short Run Series

1973 pennies were a short run series and therefore collectible and pricey.   “The one year type design for 1973 has large initials on the reverse, and makes it even rarer than other strikes.  

A transitional error for this year with a reverse of 1972 or 1974 hasn’t been discovered yet, but that’s what experienced numismatist Chuck Daughtrey says to be on the lookout for.  1973 Cents are famous for displaying a repunched mint mark or RPM.

Are you a Lincoln cent collector?  Check out a 2014 Lincoln shield cent with a die clash mint error next.  Happy hunting!  This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

2020 Penny Errors, Varieties, & Values

2020 Penny Errors, Varieties, & Values

2020 penny errors and varieties exist!  Have you found any 2020 Lincoln shield cent doubled dies like these?  Moreover,  examine both the obverse and reverse of Lincoln cents for doubling.  Furthermore, this article includes an example of a 2020-D Lincoln Cent with feeder finger errors, as well as marked photos of 2020 doubled die reverse and obverse shield cents.

2020 penny error
Arrows note doubling of the shield on a 2020 D Lincoln Shield Cent Doubled Die Reverse

Furthermore, the best chance of finding mint state 2020 penny errors and varieties is to search through uncirculated 2020 original wrapped bank penny rolls. 

Additionally, searching 2020 mint sets ensures a mint state grade specimen.  Furthermore, images of doubled die 2020 shield cent varieties to compare coins are available via doubleddie.com.   

2020 shield cent doubled dies images
Arrow notes doubling behind Lincoln's ear lobe on a 2020 penny
2020 Doubled Dies
2020 Shield Cent Feeder Finger Errors

Through the years many different kinds of feeder fingers of widely varying shapes have been used.  Moreover, some presses use a dial feeder, which looks like the dial of an old rotary phone.” – error-ref.com

2020 d shield cent error photo

For instance, “a feeder finger is a moving machine part that delivers a planchet to the striking chamber.  Additionally, it functions as an ejection finger after the strike.”  Observe the arrows noting a 2020 feeder finger error penny below.

Feeder finger errors are relatively minor.  However, they’re still collectible.  Moreover, “feeder finger errors are the result of the feeder finger scraping across the the anvil die.  Therefore, die scrapes appear on a coin as closely spaced, parallel ridges. ” – error-ref.com

2020 Lincoln Cent Values

Furthermore, 2020 pennies don’t have to have errors or be a die variety to be valuable.  For instance, a 2020-D 1C Shield cent, graded MS68RD, sold for $5000.00. Moreover, a 2020 1C Shield cent, graded MS69RD, sold for $721.00. 

2020 penny values

However, those values are based on coins in flawless condition.  2020 penny errors are selling for $5 and up in raw condition on Ebay.  The condition of the coin impacts value.

Are you checking your pocket change?  You could very well strike it rich someday.   Additionally, the image below is of a 2020 D penny with doubling displaying on Lincoln’s Ear.  Furthermore, these are rare pennies worth money and they’re worth looking for along with any errors.
error pennies 2020 coins




error pennies with pictures 2020

2020 penny struck through mint errors sell for $5 and up on Ebay.  Again, values depend on the type of mint error or die variety a coin is designated, as well as the condition of the coin. There are many types of error pennies.  For instance, check out a 2021 struck through error by clicking here.

error pennies

Furthermore, check out an examination of a special edition 2019 W Proof Lincoln Shield Cent.  Then, look out for 2021 Lincoln cent errors and varieties like this too!

This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

shield cent die errors
Reverse Die Break on a 2020 P Lincoln Shield Cent

2014 Lincoln Cent Errors, Varieties, and Values

2014 Lincoln Cent Clashed Die Error

2014 Lincoln cent errors and varieties exist!  For instance, this 2014 P shield penny displays a die clash on the obverse, and a reverse feeder finger error.  Furthermore, die clash errors like this are sought after error pennies!  For instance, they sell in raw condition on Ebay for $10 or more.

2014 lincoln cent errors

2014 Lincoln shield cent values may vary.  In other words, values depends on the type of error or variety, and the coin’s condition.  Clashed die shield cents value at $10 and up in raw condition on Ebay. However, shield pennies don’t have to have errors or be a variety to be valuable.

2014 Penny Values

For instance, a 2014 1C Shield cent graded MS69 RD, sold for nearly $2000.00.  Furthermore, a 2014-D 1C Shield cent graded MS69 RD, sold for $2,599.00.  Moreover, these 2014 Lincoln shield cents are the most valuable because of their flawless condition.

2014 penny error list

Furthermore, the best chance of finding uncirculated 2014 Lincoln cent errors is by searching through original wrapped bank rolls.  Additionally, examining 2014 mint sets ensures a mint state grade proof specimen.

Die Clash Penny Errors

Moreover, “a clashed die mark or die clash error occurs by opposing dies colliding with each other as a planchet fails to be fed into the striking chamber.

Penny Errors

Furthermore, most complete planchet misfeeds don’t result in clashed dies since dies normally don’t touch each other in the absence of a planchet. Moreover, dies operate with a safety margin referred to as minimum die clearance or minimum die distance.”

Additionally, “these terms refer to the closest approach the dies make in the absence of a planchet. In order for dies to clash, the dies must fall out of adjustment, making the minimum clearance zero (or less than zero).” – error-ref.comAdditionally, a similar example has been listed as TDC-1c-2014-01 via maddieclashes.com

Lincoln Cent Error List 2014 D
Feeder Finger Errors

A feeder finger scraping across an anvil die causes feeder finger errors.  In other words, die scrapes appear on a coin as closely-spaced, parallel ridges.”

Moreover, die scrapes may appear on the hammer die.  Additionally, other causes make die scrapes, but in most cases they’re difficult to distinguish from feeder finger damage.” – error-ref.com

2014 penny error value
2014 Shield Penny Doubled Die Varieties

Furthermore, 2014 Lincoln shield cent doubled die variety examples are available with images and listed at doubleddie.com or varietyvista.com.  Additionally, if you enjoyed this article, then check out an examination of a 2009 Lincoln cent die variety.  There are so many interesting coin errors to look for!  Thanks for subscribing!

This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

2009 Lincoln Cent Errors, Varieties, & Values




2009 Lincoln Cent Professional Life Errors, Varieties, & Values

2009 Lincoln Cent doubled die varieties and other errors exist on bicentennial pennies!  First, be aware that the 2009 Lincoln cent professional life coins were struck in low mintage.  Second, keep in mind that the lower the population in the highest grades, the more valuable these coins are.

2009 professional life penny error

Furthermore, doubled die varieties and errors exist with increased value. Moreover, reliable online resources for comparing images to the “doubling found in the windows on the building” of the 2009 Lincoln Cent can be found via varietyvista.com.  Additionally, check out the listings at doubleddie.com.




2009 Professional Life Bicentennial Cent

According to PCGS Coin Facts, a 2009 1C Lincoln-Professional graded MS68RD sold for nearly $2000.00.  However, it wasn’t an error, nor designated as a variety.  In other words, it’s valuable because any coin in flawless condition has a dramatic impact on value.

2009 professional life penny error value
Where to Find Mint State Grade 2009 Lincoln Cents

Additionally, private dealers list uncirculated rolls and sets still sealed in original packaging on Ebay at reasonable prices or through their coin shop websites. 




However, some collectors get boxes of pennies from the bank to search through, as another way to find valuable coins in mint state condition to hunt through for varieties and errors.

2009 lincoln penny error
Making a Living in the Coin Industry

Coin roll hunting is in fact a form of self employment.  It can be very time consuming, but that’s how some people have learned to make a living in the coin industry. 




Finders get to decide what to do with whatever treasures they find.  Many search to keep for themselves or do the research to garner a small profit and list what they’ve found for sale online.  Furthermore, they will sell original bank wrapped rolls of 2009 Professional Life Lincoln cents for coin roll hunters to purchase and search through.

2009 professional life penny error list
Arrow points to a die crack extending from the top of the "L" of LIBERTY

The most flawless coins are those usually sent off to be graded by a grading company such as ANACS or PCGS. Then, the coin is consigned with companies like Heritage Auctions, or Stacks & Bowers, but not always.  Moreover, some dealers choose to list their coins on the market in raw condition.

Professional Life in Illinois 2009 Lincoln Cent Design

Abraham Lincoln worked at different jobs in Illinois, including piloting a steamboat. However, he had also become interested in politics, and with studying and practicing law. 

Lincoln Bicentennial penny
2009 Bicentennial Series Proffesional Life Cent

Elected to the Illinois General Assembly in 1834, he then moved to Springfield, the capital of Illinois in 1837, where Lincoln married and started his family.”

2009 lincoln cent penny value
The arrow points to a die chip atop the hair of Lincoln's head
Abraham Lincoln Professional Life

“Doing well as a lawyer, he won election to the U.S. House of Representatives in 1846.  Moreover, Lincoln’s debates made him nationally famous.  Furthermore, they showcased his debating skills, clear thinking, sense of moral, and content of character.  Two years later, the Republicans nominated him to run for president, and he won the election.”

professional life penny error list

“The 2009 Professional Life coin design represents Lincoln standing outside the state house of Illinois. It reminds us of his career in law and politics before he ran for the presidency.”

2009 penny error list
Lincoln Bicentennial One Cent Series Program

“The 2009 Lincoln Bicentennial One Cent Program offered four different reverse designs within the year of 2009.  Moreover, the year 2009 was not only the 200th anniversary of Abraham Lincoln’s birth, but also the 100th anniversary of the Lincoln cent, first appearing in 1909.  Furthermore, the Lincoln image remained on the obverse (front) of all four cents in the limited edition series.”

bicentennial penny rolls

Furthermore, the four different images applied highlighted four parts of Lincoln’s life. The first minted represents his Birth and Early Childhood in Kentucky. Moreover, the second depicts his Formative Years in Indiana. Additionally, the third design presents his Professional Life in Illinois and the fourth his Presidency in Washington, DC.”

First, watch the footage of the examination of the 2009 Lincoln Cent professional life coin listed above.  Then, check out an examination of a rare 2009 Formative Years Lincoln bicentennial cent lamination error.

Doubled Die Variety Listings of the 2009 Professional Life Lincoln Cent Doubled Die Varieties Via Coppercoins!

This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

1993 Lincoln Cent Errors, Varieties, & Values.

1993 Lincoln Cent Errors, Varieties, & Values

1993 Lincoln cent errors and varieties exist!  For instance, observe this 1993 penny error.  Furthermore, note how it displays rainbow toning, a “birds nest” interior die break on the memorial building, and various other different die markings.  

1993 lincoln cent penny error list

Furthermore, it is a doubled ear variety!  “Common places to notice errors on a one cent coin include the chin, eyes, and ears.  Additionally, look for cracks, cuds (or blobs covering an image, word, date, etc.), or missing elements on the images.”

Moreover, variety coins and errors are quite valuable to coin collectors, and many of these error coins are still in circulation because identifying these coin errors requires magnifying tools such as a coin loupe to examine them.

1993 birds nest penny
"Birds Nest" Lincoln Memorial Pennies

Additionally, a “bird’s nest” is die chip on the upper right corner of the memorial building. Some people like to collect error coins by die break progression.

Moreover, large interior die breaks are relatively rare, and sometimes form along or in conjunction with a die crack.  The value of a coin with a die break or a die crack often depends on the size and severity of the fracture in the die

1993 lincoln cent errors to look for

Error coins get their nicknames such as “spiked head penny” due to the location of a die crack.   However, die breaks or cuds are worth more than die cracks in general.  – coinworld.com

Furthermore, note how die trails form doubling on some of the lettering of E PLURIBUS UNUM.  The waves around the lettering is from die wear over an area where the die had received abrasion polishing.  The cracks and die breaks indicate the age of the die imprinting the coin.

1993 penny error value
Die Gouge Errors

Note a die dent or gouge,  visible atop and above the “E” in”ONE.”  Additionally, another die break is apparent in the center of the “C” of CENT.   This 1993-d Lincoln cent error coin displays a lot of anomalies!        

Furthermore, numismatists may suggest “doing a toothpick experiment on any raised areas.  If you can poke a hole in it with a toothpick, then they’re gas bubbles on the planchet, and not from the die.

1993 lincoln cent penny error value
1993-D Lincoln Memorial Cent Doubled Die Varieties

Furthermore, note a form of doubling evident under Lincoln’s ear lobe. This 1993 Lincoln cent doubled die obverse variety penny is indeed very unique.  For instance, observe a portion of an extra lobe visible beneath the primary ear lobe noted where the arrow points.

Moreover, once you know what to look for, it becomes easier to spot.  For instance, look for an extra ear lobe on all  2021 Lincoln Cents.  Doubled die variety coins are highly desired and very valuable collectible coins! 

1993 penny

Moreover, doubleddie.com has a list of various 1993 doubled die variety pennies with images to compare to.  Additionally, look for doubling on the reverse of 1993 pennies, in the Lincoln memorial columns.   

Furthermore, a similar 1993 D Lincoln memorial cent with doubling of the ear lobe is listed via coppercoins.com.  You’ll want to invest in a digital coin microscope if you intend to discover variety and error pennies for yourself. 

railroad rim penny collar die clash error
Arrows note a collar die clash or railroad rim error on a 1993 penny coin
1993 Penny Values

1993 Lincoln memorial one cent coins don’t necessarily have to have errors or be a die variety to be valuable.  For instance, a 1993 1C, RD (Regular Strike) graded MS68+RD, sold for $3,375.00.

Furthermore, a 1993-D 1C, RD (Regular Strike) graded MS69, sold for $4,600.00.   Moreover, asking prices on Ebay range from $10 to $70.

Additionally, check out an examination a a 1970 S Large Date Lincoln Cent Doubled Die Variety Coin!  Coin hunting is like treasure hunting with added benefits.  It keeps a kid out of trouble and teaches finances.

1993 penny error list

Furthermore, rare and valuable pennies are still floating around in circulation.  Lincoln Cents Online shows cuds, and other unique coin errors sought after by error coin collectors.  Additionally, observe what Lincoln Memorial Cent 1993 US penny coin errors are going for at current market value by observing the sold for Ebay listings.

best selling coin guides
Best Selling Coin Guides

This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

1960 Lincoln Cent Errors, Varieties, & Values

1960 D Small Date Lincoln Cent Errors, Varieties, and Values

1960 small date Lincoln cent errors and varieties exist!  First, note the heavy die scratches on the date of this 1960 Lincoln cent.  Furthermore, die markings are useful as markers for identifying the stage of a die.  Moreover,  the pattern acts like a fingerprint, pinpointing an exact position in the die progression” – conecaonline.org

1960 Large & Small Date Lincoln Cent Varieties

“The engraving Department grew concerned that the small size of the numeral “0” in the date caused the dies to chip or become clogged.  Therefore, it lead to the creation of the 1960 large date cent.  Moreover, the 1960 Lincoln cent obverse master die was swapped out with another having all four numerals enlarged.” 

1960 D Lincoln Cent Small Date Variety

Everyone involved at the mint anticipated no one would notice outside of the mint. “However, collectors found out while examining the pennies for die clashes, die breaks, filled letters, roving mint mark positions, doubled dies, and other anomalies.”

Rare 1960 Penny

“Furthermore, Denver minted 158,884,000 Small Date Lincoln Cents in 1960.” – usacoinbook.com.   Moreover, “die clashes on the 1960 and 1960 D small date Lincoln cents led to an exciting discovery, giving “the 1960 small date Lincoln cent a unique story to tell.”  – error-ref.com

1960 Lincoln cent value

Additionally, “coin experts and enthusiasts may make offers on any coin that is a high mint state grade (such as MS67 and higher), or any coin that has a doubled die variety or other rare mint errors” – coinappraiser.com.

1960 pennies are extremely valuable if they are rare varieties or errors.  “The 1960 Small Date Die Variety Coin kicked off a hunting frenzy!” – coinweek.com.

1960 Lincoln cent error

Furthermore, getting more than one opinion will save you money in the long run.  The value of a coin depends on what a buyer is willing to pay for it.  However, the condition of the coin impacts value.

1960 penny errors and varieties
1960 Penny Values

For Instance, a 1960-D 1C Small Date graded MS67+RD, sold for $3525.00.  Furthermore, 1960-D 1C Small Date graded AU53BN, sold for $1006.00.  Additionally, a 1960-D/D 1C Small/Large Date Variety graded Ms66+RD, sold for $4,0025.00.

1960 Lincoln cent error list

Furthermore, the best chance of finding rare uncirculated 1960 Lincoln cent errors and varieties is by searching through original bank wrapped rolls.  Moreover,  examining 1960 mint sets ensures a mint state grade coin specimen.

1960 Lincoln Penny Doubled Die Varieties

1960 Lincoln cent doubled die variety listings are available via doubleddie.com.  Additional images to compare are available via varietyvista.com.  First observe the videos below discussing 1960 Lincoln cents.  Then, check out a 2019 partially unplated Lincoln cent.

This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.