Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1059:
1921, black overprint with omitted date at right on 1pi blue, full original slightly dryish gum, NH, VF, C.v. $400++, SG #25a, C.v. £425 as hinged, Est. $200 -$250, Scott #L18e
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