The San Francisco Mint struck Lincoln cents in 1970 for everyday pocket change.
Most of these pennies look completely normal.
A few dies in 1970 received misaligned impressions during the hubbing process.
This mistake created a dramatic doubling on the front of the coin.
Collectors refer to this specific variety as the FS-101 Large Date doubled die obverse.
It ranks near the very top of desirable modern Lincoln cent varieties.
Finding a genuine example in any condition is an exciting discovery for Lincoln cent specialists.
Heritage Auctions sold a premier example of this variety certified at Mint State 66.
The auction listing achieved a standout price in August of 2024.
A grade of 66 means the coin is in brilliant uncirculated condition with minimal surface marks.
Pennies are made of soft metal that scratches easily when handled.
Most coins from 1970 spent years circulating in pockets and cash registers.
Finding a high-grade survivor preserved this well is extremely difficult.
Third-party grading guarantees that the doubling is authentic and that the metal surfaces are original.
Collectors bid aggressively because certified high-grade specimens appear on the market very rarely.
The main driver of value is the rarity and strength of the doubling.
Many varieties show faint doubling that requires intense study to notice.
The 1970-S FS-101 features bold spread across key design elements on the obverse.
Lincoln cents have one of the largest collector bases in American numismatics.
Thousands of collectors try to build complete variety sets of Lincoln cents.
Only a tiny fraction of the original 1970-S mintage carries this doubled die.
Very few of those surviving pieces escaped heavy bag marks, wear, or spotting.
When high demand meets such a limited supply of clean coins, prices climb quickly.
You need good lighting and a magnifying loupe with at least 5x to 10x magnification to examine your coin.
Start by checking the mint mark below the date to confirm you have an "S" for San Francisco.
Next, determine if you have a Large Date coin by checking the alignment of the numbers in "1970".
On the Large Date variety, the high point of the "7" sits lower than the tops of the "9" and "0".
Turn your attention to the lettering around the obverse rim.
Look closely at the national motto "IN GOD WE TRUST" along the upper edge.
The genuine FS-101 shows strong, clear doubling toward the center of the coin across these letters.
You can also spot doubling on the word "LIBERTY", especially on the letters "BER".
Do not confuse this with machine doubling, which looks flat, shelf-like, and weak.
True hub doubling creates distinct, rounded extra outlines on the letters.
You can use CoinKnow on your smartphone to scan the coin and get a fast first opinion on its details.
If your piece appears to match the diagnostic doubling, submit it to a certified grading service for formal authentication.
If you want to double-check what you are seeing, the coin valuation app picks that held up in testing helps.