Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 468:
1935, plate proofs on India paper mounted on cards of 1c-$1, complete set of 11, high values with sheet margins, no gum as produced, NH, VF, Unitrade C.v. CAD$1,800, Est. $400-$500, Scott #217-27
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