Fossil Gastropod Spiral Shell Internal Casting, 14"!
Updated August 16, 2026
| Lot number | 0065 |
| Estimate | $1,700 - $2,550 |
| Opening bid | $750 |
| Auction | American Frontier | Ethnographic | Tribal Art |
| Date | August 24, 2026 at 11:00 AM EDT |
| Auction house | Artemis Fine Arts |
| Location | Louisville, Colorado |
Ca. 40 million years old. Western Europe, Eocene Epoch, ca. 40 million years ago. A large and uncommon natural interior cast of a prehistoric sea snail preserved in its limestone matrix, with the
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