Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 483:
1992, Canada in Space, 42c multicolored, top right corner sheet margin block of four with imprint on both edges, containing two horizontal se-tenant pairs, both left stamps have omitted hologram and tagging variety, full OG, NH, VF, C.v. $2,600 as two pairs, Greene Foundation certificate, Unitrade C.v. CAD$4,200, Scott #1442b
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