Antarctic Treaty Plate Block
Updated August 6, 2026
| Lot number | 586 |
| Estimate | 15.00 - 30.00 USD |
| Auction | Stamps & First Day Covers |
| Date | August 8, 2026 at 9:00 AM PDT |
| Auction house | Heroes and Legends |
| Location | Palm Desert, California |
1971 U.S. Plate Block of 4 x 8c Stamp Antarctic Treaty Issue, Scott#1431
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