Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1352:
1922, red Airplane overprint on 45r green and black, left margin horizontal gutter block of four, perfect quality in every respect, full OG, NH, VF and scarce positional piece, Est. $500-$600 , Sc. #C1 var
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