Maryland Casualty Company Advertising Pocket Mirror
Updated August 6, 2026
| Lot number | 0296 |
| Estimate | $10 - $10,000 |
| Opening bid | $10 |
| Auction | August Gas, Oil, and Advertising Auction |
| Date | August 30, 2026 at 3:00 PM EDT |
| Auction house | Check the Oil Promotions, LLC |
| Location | Louisville, Ohio |
3.75" x 3.75" is marked Green Duck Co. Chicago
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