Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3
Lot 1512:
OVERPRINTS OF TYPE 1 COLLECTION ON STOCKPAGES: 1918, 80 mint or used (34) stamps in singles, pairs and blocks of 4, including 54 perforated ones with 3.50r and 7r on vertically laid paper, 4k mint and used, 5k mint; 26 imperforated stamps with 2k in block of 4, 15k corner single and 50k – used pair, nice unit, full/large part of OG or used, F/VF, ex-Dr. Seichter and Dr. Zelonka, Bulat #1370/425, C.v. $1,300++ (No.1370 has no price), Est. $500-$600
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