Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Canada - 1927, Yukon Airways and Exploration Co. Ltd, reversed image die proof of 25c in black, printed on thick card, size 98x75mm, no gum as produced, NH, VF, Unitrade C.v. CAD$450, Est. $200-$250 , Scott #CL42