Imagine finding a penny worth over $102,000 hiding in your pocket change. 
That’s exactly what happened when one of the rarest U.S. coin errors — known as the “UNITEDSTATESOFAMERICA” no-space penny — sold at auction.
Only 3–5 examples are known to exist, making this one of the holy grails of coin collecting. Here’s your complete guide to identifying, authenticating, and possibly cashing in on this incredible mint error.
Key Identification Features
These are the signs you may have the six-figure rarity:
“UNITEDSTATESOFAMERICA” – all words merged together with no spaces
Sharp, crisp inscriptions (no weak or faded strikes)
Full copper weight – 3.11g
MS65+ Red condition – bright color, flawless surface
Side-by-Side Comparison
| Normal Penny | Rare Error Penny |
|---|---|
| “UNITED STATES” | “UNITEDSTATES” |
| “OF AMERICA” | “OFAMERICA” |
| Words separated | Words merged into one |
2024 Value Breakdown
| Grade | Description | Value |
|---|---|---|
| MS-65+ Red | Flawless | $102,000+ |
| MS-63 | Few marks | $60,000 – $85,000 |
| AU-55 | Light wear | $30,000 – $50,000 |
| VF-20 | Circulated | $15,000 – $25,000 |
Record Sale: $102,000 (Heritage Auctions, 2023) 
4-Step Authentication Guide
Magnify the Lettering (10x+)
- Look for genuine die errors, not scratches or post-mint alterations.
Weigh the Coin 
- Must be 3.11g ±0.13g.
Check Dimensions 
- Diameter: 19.05mm
- Plain edge (no reeding)
Get Certified 
- Submit to PCGS or NGC for grading to get top dollar.
Why This Error Is Worth Six Figures
- Extreme Rarity: Less than 5 confirmed examples worldwide.
- Historical Significance: Offers insight into the mint’s die preparation process.
- High Grade Requirement: Only pristine examples command over $100K.
Where to Search for One
- Old coin rolls from the 1930s–1950s
- Estate sale “junk” coin boxes
- Dealer inventory that might be mislabeled
Fake Alert – Common Red Flags
Laser-etched lettering
Epoxy-filled spaces
Incorrect weight or metal
No third-party certification
Selling Your Rare Penny
- Never clean the coin (reduces value instantly)
- Get professional, high-quality photos
- Sell through:
- Heritage Auctions (record-breaking results)
- Stack’s Bowers (serious collector market)
- Private museum sales (quiet, discreet)
Pro Tip: If you think you’ve found one, send clear photos to an expert for a free evaluation before taking it anywhere.
Free Download: Ultra Rare Penny Checklist (with magnification tips)
