Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1693:
1949, 75th Anniversary of the UPU, nine perforated and imperforate souvenir sheets of four, including seven items with various ”RIS” overprints, one imperforate sheet has ”RIS Merdeka” inverted overprint, full OG, NH, VF, C.v. $295++, Scott #65b, c, var
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