KEY DATE! US Mint 2012 Proof Set
Updated August 6, 2026
| Lot number | 0306 |
| Opening bid | $1 |
| Category | Coins & Currency |
| Auction | COINHUNTERS 747 Sunday Night Timed Coin Auction |
| Date | August 16, 2026 at 10:00 AM EDT |
| Auction house | Coinhunters |
| Location | Glen Carbon, Illinois |
Key date of the Series! In Original Government Packaging with Certificate of Authenticity
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