United States, British Commonwealth, and Foreign Stamps, Covers, and Collections

AUSTRIA: Sieger 119 C, 1931 Polar Flight, C18, C21, C27 tied on a card by Wien 21.VII.31 cancels, Berlin 24.7.31 and Friedrichshafen 24.7.31 transit cancels, usual flight cachet, Very Fine and scarce with only 72 pieces flownSale 3043: United States Postal History and Flight Covers - Tuesday, June 22, 2021 - 2 p.m. Eastern