Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 1585:
1922, forgery of 1000r dark blue and pale greenish blue, perforation L11½, the same as for issued stamp, top right corner margin horizontal gutter block of four, full ”original gum”, NH and scarce reference item, Est. $120 -$150, Scott #304
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