1999 The Washington Mint $20 4 oz .999 Silver Proof Certificate
Updated September 2, 2026
This auction ended on September 19, 2026.
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| Lot number | 0838 |
| Estimate | $30 - $5,000 |
| Opening bid | $15 |
| Auction | Estate Treasures & Collector Finds Auction |
| Date | September 19, 2026 at 10:00 AM EDT |
| Auction house | Matthew Bullock Auctioneers |
| Location | Ottawa, Illinois |
1999 The Washington Mint $20 4 oz .999 Silver Proof Certificate
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