Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 672:
1897, Queen Victoria Maple Leaf issue, plate proof of 6c in brown, horizontal imperforated pair on card mounted India paper, no gum as produced, VF, Unitrade C.v. CAD $450, Est. $200-$240 , Sc. #71
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