Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Canada - 1926, Fairchild Air Transport, Ltd, Rouyn Goldfields, (25c) ultra, pane of ten with inverted right column, which in addition is in darker shade, full OG, NH, VF, Unitrade C.v. CAD$2,250, Est. $800-$1,000, Scott #CL12b