Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2

Canada

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Start price: $200

Buyer's premium:

1908, Quebec Tercentenary issue, 20c brown, top sheet margin vertical imperforated pair, nice pre-printing paper fold, no gum as produced, NH, VF and scarce, Unitrade C.v. CAD$1,000++, Est. $300-$400 , Sc. #103 imp