How can you tell the difference between an annealing error and environmental damage?

The key identifier is the luster and the reeding. On a legitimate 2018 Michigan annealing error, the copper core (reeding) will show a normal red copper color because the sintered layer is scraped off during ejection. Environmentally damaged coins usually lack luster and the reeding remains dark.

What is the value of a 2018 Michigan Pictured Rocks Improperly Annealed Quarter?

Values range from $5 to $10 for circulated coins, $25 to $50 for AU specimens, and can exceed $100 to $250 for professionally graded MS65+ coins.

What colors appear on a sintered planchet 2018 quarter?

Typical colors include copper-red, charcoal black ('Black Beauty'), and a satin silver-gray ('Nickel Beauty').

Quarters Archives ⋆ markedmoney.tech

2022 Dr. Sally Ride Quarter Errors

2022 Dr. Sally Ride Quarter, Errors, Varieties, Values, and FAQs

2022 Dr. Sally Ride Quarter: Facts and History

Hunting for a unique Sally Ride Quarter? The 2022 Dr. Sally Ride Quarter is a landmark release in the American Women Quarters Program, serving as the second coin in the series.

It honors Dr. Sally Ride, the physicist and astronaut who became the first American woman in space in 1983. You’ll want to hunt for 2022 quarter error and variety coins.

You could potentially flip the coin and turn a quarter into dollars too. This hobby is profitable, so invest in your coin collecting gear and join today!

The reverse design, created by Elana Hagler and sculpted by Phebe Hemphill, captures a profound moment: Dr. Ride in her NASA flight suit, looking out the space shuttle’s window toward Earth.

Sally Ride Quarter Value

2022 Dr. Sally Ride American Women Quarter Errors for the Great American Coin Hunt!

For coin hunters, the Sally Ride quarter has several distinct minting errors.

One of the most sought-after is the “Vomit Comet” die clash, a rare error where the obverse and reverse dies collided without a planchet in between, causing Washington’s profile to appear “ghosted” onto the reverse window.

Are you a fan of rare and valuable Lincoln Cent errors and varieties? If so, check out this coin list here!

High-grade examples of this clash have been valued at over $2,000.

Other notable varieties include the “Ghost Comet” (a trail-like die clash near the Earth), the “Drooling George” die chip near Washington’s mouth, and the “In COD We Trust” error found on Denver strikes, where a grease-filled die obscured the “G” in God.

Rare American Women Quarter Values

2022 Dr. Sally Ride Quarter: Error & Value Chart

Error / Grade	What to Look For	Est. Value
"Vomit Comet" Die Clash	A major die clash where obverse and reverse designs blend; Washington’s ghosted profile appears on the reverse.	$2,000 – $10,000+
"Black Eye" Error	A specific die clash resulting in a dark, bruised-looking mark on Washington’s cheek.	$500 – $1,000
"Ghost Comet" Trail	A distinct "trail" or line caused by a die clash near Dr. Ride’s image on the reverse.	$200 – $500
"Drooling George"	A die chip error at the corner of Washington’s mouth, making it look like he is drooling.	$3 – $175
"In COD We Trust"	Grease-filled die error that obscures the "G" in GOD. Common on Denver strikes.	$5 – $25
MS68 (Gem Uncirculated)	Flawless strike with no visible marks to the naked eye. Extremely rare.	$995 (Record)
MS67 (Uncirculated)	High-grade coin with very few contact marks. Typical for mint set coins.	$25 – $45
PR70 DCAM (Proof)	The highest possible proof grade. Deep Cameo contrast between fields and design.	$55+
Circulated Grade	Standard coins found in pocket change with visible wear.	Face Value

*Values based on recent eBay sales and auction records (2025-2026).

Tap Here Get Uncirculated Rolls of 2022 Dr. Sally Ride Quarters!

Whether female or male embark on the Great American Coin Hunt! Collect all the American Women Quarters! You’ll need your coin roll hunting essential tools kit to get started.

After you’ve ordered your supplies, Cash Money, Coin Hunter, and or I’d Rather Be Coin Roll Hunting shirts. You’ll have all you need and a few lucky charms to get started. Bookmark this list to further your hunt finding rare National Park Quarter Errors. Happy Hunting!

State Quarter Errors

State Quarter Error List

Check out this list of State Quarter Errors, ATB National Parks Quarters, and American Women Quarters.

Support the Hunt: Love searching for state Quarter errors? Check out my official "I'd Rather Be Coin Roll Hunting" Shirt.

50 State Quarters (1999–2008)

1999-2000

Delaware (1999)
Virginia (2000)
Pennsylvania
New Jersey
Georgia

2001-2002

Indiana (2002)
New York
North Carolina
Mississippi
Ohio

2003-2004

2005-2008

America the Beautiful (2010-2021)

American Women (2022-2025)

Tap on each highlighted link above to view the corresponding coin errors and varieties discovered during microscopic examinations.

Remember, the more flawless the coin, the more valuable it is. Have fun coin roll hunting. I hope you find a valuable treasure to sell or collect for yourself.

Tap Here National Park Quarter Errors List

The coin hobby is profitable, not just from putting together collections, but for selling any error or variety coins you do find.

Check out this list of tools you’ll need to start your own treasure hunt hunting through circulated or uncirculated rolls for rare coins.

2018 Michigan Quarter Errors

2018 Michigan Quarter Error Pictured Rocks Black Beauty

2018 Michigan quarter errors and varieties are collectible coins.

For instance, this 2018 Michigan BLACK BEAUTY quarter displays an improperly annealed planchet error.

A coin loupe will help you determine it’s not just a dirty or damaged coin.

For instance, I almost mistook 2018 Michigan quarter errors for an environmentally damaged coin, as did a few others presume.

However, further examination confirmed this 2018 quarter is indeed a black beauty error quarter.

I learned after scouring the web for articles and visual examples and sought out advice for how to appropriately identify the error.

Additionally, to understand a mint error like this, it’s important to understand how the coin production process works.

The Annealing Process

Coins start out as blanks. First, blanks are first cut from metal coils and then sent to an annealing furnace.

Then, from the furnace they go to a cooling water bath, followed by a polishing/brightening rinse.

Finally, drying machines help shine and burnish each piece.” – coinweek.com

The annealing process softens the metal to prepare it for striking. Blank planchets are placed in an annealing furnace that first heats, and then slowly cools the metal. – numismatics.

How to tell Environmental Damage from an Annealing Error

“To tell the difference between an annealing error, (which happens before striking,) and environmental damage, (which happens after striking), pay attention to the luster of the coin.

2018 National Park Improperly Annealed Quarter Errors and Varieties

“The copper core (reeding) shows a nice normal red copper color. Furthermore, the planchet displays as darker coloring remaining on the smooth edge of the reeding after the planchet is struck in the collar.

However, when a coin is ejected from the collar, the darker coloring is removed from the ridged reeding. The reeding as a normal red copper color is one of the key identifiers to know,” it’s legit.– Fred Weinberg – cointalk.com

Furthermore, the colors most associated with improperly annealed planchet errors are “copper, red, black, brown, and gray. Coverage can be complete or incomplete.” – error-ref.com

2018 Michigan Quarter Improperly Annealed Planchet Error Values

Improperly annealed planchet error values depends on a few factors. They’ve sold between $5 and $20 in raw condition on ebay. This type of mint error can have asking prices higher than a hundred dollars, if it’s been properly authenticated.

2018 Michigan Pictured Rocks Quarter: Improperly Annealed (Sintered) Planchet Error Value Chart

Condition / Grade	Estimated Value (USD)	Key Identifiers
Average Circulated	$5.00 – $10.00	Visible "sintered" copper-wash; often mistaken for dirt.
Fine to Very Fine	$10.00 – $25.00	"Black Beauty" or orange/copper toning; clear luster.
About Uncirculated (AU)	$25.00 – $50.00	Minimal wear; silver-gray or deep copper finish is prominent.
Mint State (Raw)	$50.00 – $75.00	High eye appeal; consistent toning across the whole planchet.
Certified/Graded (MS65+)	$100.00 – $250.00+	Professionally authenticated as "Improperly Annealed."

*Values based on recent eBay/auction data. High-intensity errors or rare color variants may command higher premiums.

Get Her Coin Hunter Shirt!

Click the image of the woman wearing it, or get the Coin Hunter T-shirt here. A 2003 P Illinois State Quarter improperly annealed sintered planchet error, sold at auction via Great Collections for nearly $20. A 2002 P Mississippi State Quarter Improperly Annealed Sintered Planchet, sold at auction via Great Collections for just $16.00.

The return of investment doesn’t appear worth sending a quarter with an annealing error in for grading. Demand isn’t high for this type of error, so if you find one you’ll profit more by selling it in raw condition. One in this condition though, is best sent off for grading and auction.

2018 Michigan Pictured Rocks Quarter Error

Examine pocket change carefully! This camouflage colored 2018 P Michigan Pictured Rocks quarter with an improperly annealed planchet appeared to be a dirty coin, but rather is actually a rare mint error.

A sight to see for rare niche error coin collectors! Check out more featured quarter errors listed in this coin roll hunting guide.

The copper reeding on the coin wouldn’t be its natural color, and the quarter would be lacking its luster if it was just a normal dirty coin. In other words, you have to look beyond the camouflage! A flawless coin has no nicks.

Coin Roll Hunting Rare Plating Error Coins

Furthermore, I once found what appeared as a 2019 silver painted penny that turned out to be a partial plating error!

I’ve learned a lot about coin production from the United States Mint channel.

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