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

Canada

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Start price: $60

Buyer's premium:

1927, 60th Anniversary of the Confederation, Sir Wilfrid Laurier, 5c violet, bottom sheet margin horizontal pair, full OG, NH, VF, C.v. $180, Unitrade C.v. $240, Est. $100-$120 , Sc. #144a