Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2
Lot 726:
1954, Austrian State Printing Plant, 1s black and (light red), imperforated single with light red color omitted, nice margins all around, full OG, NH, VF and rare, Dr. Wallner certificate, ANK #1020 PIII, priced ”-”, Est. $500-$600, Sc. # 598
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