Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Lot 375:
1979, Queen Elizabeth II, (17c) green, a single with black color omitted and horizontal perforation shifted to the bottom, full OG, NH, VF and very scarce, a common stamp is added for comparison, C.v. $750, Unitrade C.v. CAD$1,250, Est. $300-$400, Scott #789d
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