Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Wednesday, April 24, 2024 at 3:00 PM UTC
Lot 355:
1897, plate proofs of 5c dark blue and 6c brown, horizontal imperforate pairs printed on India paper and mounted on cards, first one with bottom margin, no gum as issued, NH, VF, Unitrade #70P-71P, C.v. CAD$1,050++, Scott #70-71
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