U.S. & Worldwide Stamps & Postal History
July 10-11, 2007
| Images | Description | Current Bid |
 | Lot #1572 POLAND Flight Covers 1931 (20.7.) First Flight Sofia-Warszawa, v.f., with 21.7. arrival pmk, charged 10gr postage due (deemed unnecessary, hence "Uniewazniono" (cancelled) hs applied), only five carried  | Price Realized $1,400.00 |
 | Lot #1573 POLAND Flight Covers 1931 (20.7.) First Flight Sofia-Gdynia, v.f., with 21.7. Warszawa transit and 22.7.31 Danzig arrival pmks, returned to sender, v.f., only five carried | Price Realized $1,400.00 |
