The 1923-S Lincoln penny holds a special place in twentieth-century numismatics.
Struck at the San Francisco Mint, this coin belongs to the long-running Lincoln cent series.
Like other cents of the era, the coin was struck in a standard bronze composition.
Branch mint pennies from the early 1920s are well known for production issues.
The San Francisco Mint often used worn dies to strike these bronze cents.
Because of this, finding a sharply struck piece with full original color is difficult.
Most examples from this run entered daily circulation immediately.
Few collectors at the time preserved original uncirculated rolls directly from the facility.
A standout example of this issue crossed the block in a sale by LM.
The coin was certified at the Mint State 65 grade with full red color.
This exceptional piece realized an auction record price logged as 09/19.
A grade of 65 means the coin shows no signs of wear and has only minor contact marks.
The "RD" or Red designation indicates that the coin retains nearly all of its bright copper luster.
Copper reacts easily with air, so keeping that natural color for decades is uncommon.
Record prices like this occur only when top-tier certified coins appear at public sale.
A typical circulated piece from pocket change will not bring this kind of money.
The primary value driver for the 1923-S cent is condition rarity.
Millions of cents were struck, but the vast majority wore down through everyday commerce.
Copper is a chemically active metal that darkens to brown over time.
Finding a cent that stayed fully red without spotting is unusual.
Additionally, the strike quality at the San Francisco Mint was often weak in 1923.
Many coins left the press with mushy details on Lincoln's coat and the wheat stalks.
A sharp strike combined with pristine surfaces puts an example in high demand.
Set registry collectors compete aggressively whenever a certified Gem Red specimen becomes available.
You should start by checking the date on the front of the coin.
Look directly below the date 1923 for the small "S" mint mark.
If there is no letter below the date, the penny was struck in Philadelphia instead.
Use a 5x or 10x magnifying glass to inspect the surface for wear.
Check the high points on Lincoln's cheekbone and the hair above his ear.
Look at the reverse side to see if the tips of the wheat ears show flat spots.
Note the color of the metal under good natural lighting.
A brown coin has toned, while a red coin still looks like fresh copper.
If you want a quick preliminary check, you can scan the piece with CoinKnow or the Coin Value Checker app.
A mobile tool can help you confirm the date and general condition before consulting a professional.
Keep in mind that only independent third-party grading can officially verify a Gem Red grade.
For the quickest possible value check, see a closer look at which coin valuation app actually works.