Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 336:
Description
1992, Canada in Space, 42c x2 multicolored, left sheet margin horizontal se-tenant pair, left stamps have silver color omitted, part of marginal imprint, full OG, NH, VF and very rare, reportedly the only pane of 20 with omitted silver (10 stamps) was discovered, a copy of V. Greene certificate for the pane, C.v. $2,750, Unitrade C.v. CAD $3,750, Est. $1,500-$2,000, Scott #1441a
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