Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 967:
1958, perforated and imperforate proofs of postage 5c x3 and air post 10c, 15c x3, two complete sets of seven with design printed on gum side and flags on front, matched corner sheet margin blocks of four, full OG, NH, VF, Est. $500-$600, Scott #368-70, C114-17
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