2440/4319
1931. Airmail-cover sent by plane “LIBERTY” with pilots Otto Hillig and the dane Holgar Hoiriis. Scarce (folded) [ ✉ ]
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Category
Estimate
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One bid
| When | Bidder | Bid |
|---|---|---|
| 512996 |
1931. Airmail-cover sent by plane “LIBERTY” with pilots Otto Hillig and the dane Holgar Hoiriis. Scarce (folded) [ ✉ ]
| When | Bidder | Bid |
|---|---|---|
| 512996 |