History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 494:
1938-42, Monoplane over Steamer 6c blue and R.C.A.F. Training Plane 6c deep blue, two-line perfin ”O.H.M.S.”, two three-side margin (bottom part of a sheet) plate No. blocks of 10 (5×2), perfect condition, full OG, NH, VF and a spectacular unit, Est. $100-$150 , Sc. #OC6-7
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