Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 456:
1926, one and two-line surcharges 2 CENTS on 3c carmine, three blocks of four for each type of surcharge, three unused and three used, including strongly shifted and slanted one-line surcharge, plus registered cover from Owen Sound, ONT to Chicago, franked by block of 6 two-line surcharge, all mounted on two pages from a Collection, unused blocks with full OG, NH or hinged, F/VF, Unitrade #139-40, 139i, C.v. CAD $2,170++, Est. $400-$500, Scott #139-40, var
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