History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 123:
GROUP OF THREE ITEMS: 1925-36, postcard from Riga to Danzig via Königsberg of 1925, cover from Liepaja to Vienna (1925) and registered cover from Riga to Belgium, franked by nine 10s deep green on watermarked Swastika paper, appropriate markings, mostly F/VF, Est. $250-$300, Sc. #C1-2, C6
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