A seemingly ordinary 1982 Lincoln cent shocked the coin world when it sold for $340,000 at auction 
. That’s right—one cent turned into a small fortune!
If you’ve got some spare change lying around, here’s how to spot, test, and identify this rare transitional error coin that could make you rich.
Why This Penny Is So Valuable
In 1982, the U.S. Mint changed the composition of pennies:
- Before 1982: 95% copper (weight: 3.11g)
- After 1982: Copper-plated zinc (weight: 2.5g)
The rare $340,000 penny is a mistake — struck on a leftover copper planchet when production had already switched to zinc.
Key Facts About the $340K Penny
- No mint mark (Philadelphia Mint)
- Made of solid copper instead of zinc
- Graded Mint State 67 Red (MS67RD)
- Only 5–10 coins known to exist
3 Easy Tests to Check Your 1982 Pennies
Weight Test 
- 3.11g → Possible rare copper penny
- 2.5g → Normal zinc penny
Use a digital scale (0.01g accuracy) for best results.
Magnet Test 
- Copper: Does not stick
- Zinc: May show slight attraction
Visual Inspection 
- Bright reddish-copper color
- Smooth edges (no plating bubbles)
- Crisp, sharp date & lettering
2024 Value Guide for 1982 Pennies
| Coin Type | Condition | Value Range |
|---|---|---|
| Copper Planchet Error | MS-60+ | $10,000 – $340,000 |
| Double Die Obverse Error | AU-50+ | $500 – $5,000 |
| Small Date Variety | Uncirculated | $5 – $50 |
| Normal Zinc Penny | Any | $0.01 |
How to Protect & Authenticate Your Find
Never clean your coin (it kills value)
Handle only by the edges (use cotton gloves)
Submit to PCGS or NGC for grading
Get a second opinion from a reputable dealer before selling
Where to Sell a Rare 1982 Penny
- Heritage Auctions (major coin auctions)
- Stack’s Bowers (premium numismatic sales)
- Specialized error coin dealers
