Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Canada - 1926-27, Patricia Airways and Exploration Co, Ltd., (5c) green and red on yellow paper, three corner margin values with rouletted perforation, diagonal overprint ''RED LAKE'', two with purple overprints reading downward under different angles, last one has inverted green overprint, full OG, NH (both purple overprints, hinged on margins) or LH, VF, Unitrade C.v. CAD$425, Est. $150-$180, Scott #CL30, var