Imagine turning a single penny into $340,000. 
That’s exactly what happened when a rare 1982 Lincoln cent error sold at auction for a life-changing sum.
That’s exactly what happened when a rare 1982 Lincoln cent error sold at auction for a life-changing sum.
This isn’t just pocket change — it’s one of the most valuable transitional error coins ever discovered. Here’s how to spot, test, and protect this copper treasure.
Why the 1982 Penny Is So Valuable
In 1982, the U.S. Mint changed the composition of pennies:
- Before 1982: 95% copper, weighing 3.11 grams
- After 1982: Copper-plated zinc, weighing 2.5 grams
The $340,000 penny was a mistake — struck on a leftover copper planchet after the mint had already switched to zinc. Only a handful exist, making it a collector’s dream.
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 reliable 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 (kills value instantly)
Handle only by the edges — cotton gloves recommended
Submit to PCGS or NGC for grading & certification
Get a dealer’s opinion before selling
Best Places to Sell a Rare 1982 Penny
- Heritage Auctions (major coin auctions)
- Stack’s Bowers (premium numismatic sales)
- Specialized error coin dealers
