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Newfoundland
Air Post stamps 1930, B.M. "Columbia" Trans-Atlantic Air Mail Flight, black surcharge 50c on Caribou 30c sage green, full OG, very light trace of hinge, well above average centering, very scarce, since only142 copies remained unused of 300 printed, H. Bloch, Sanabria and several others guarantee hs, P. Scheller certificate, C.v. $9,500, Unitrade C.v. C$12,000
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