Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 670:
1897, Queen Victoria Maple Leaf issue, plate proof of ½c in black, horizontal imperforated pair on card mounted India paper, no gum as produced, VF, Unitrade C.v. CAD$250, Est. $80-$120 , Sc. #66
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