The 1921-S Lincoln cent is a classic copper penny struck at the San Francisco Mint.
It holds the rank of 54 on the list of the 200 most valuable pennies.
The San Francisco facility produced coins for everyday trade along the West Coast.
Copper cents from this era entered circulation almost immediately.
Because people spent them right away, very few remained in brand-new shape.
Today, early San Francisco pennies are famous among collectors for being tough to find in fresh condition.
A premier example of this cent sold for $36,000 at Heritage Auctions.
The coin was certified in MS Red condition by a major grading service.
MS stands for Mint State, which means the coin never circulated in pocket change.
The Red designation means the copper retains its original bright orange luster.
When an early copper coin preserves that fiery factory look, bidders compete aggressively for it.
You should keep in mind that this high price reflects a top-tier certified survivor rather than an average find.
This date is a legendary condition rarity in full-red condition.
Raw copper naturally reacts with moisture and oxygen over the decades.
Most 1921-S pennies turned brown or developed dark spots long ago.
Many of the coins struck at San Francisco that year also suffered from weak strikes.
Finding one with a sharp strike and untouched mint color is nearly impossible.
Lincoln cent enthusiasts building complete sets will pay huge premiums for that original color.
You need to inspect the front of the penny under good light with a magnifying glass.
Look directly below the 1921 date on the right side of Lincoln's bust.
You should see a clear "S" mint mark stamped beneath the numbers.
Check the surface color to see if it shows bright red copper or dull brown patina.
Do not confuse this issue with the common 1921 penny made in Philadelphia, which lacks a mint mark.
If you have trouble reading the mark, a tool like CoinKnow can help you scan the details quickly.
You can also use Coin Value Checker to look over the coin before deciding to get it professionally graded.
Never clean or wipe the surface, because cleaning permanently ruins the natural red color that collectors prize.
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