Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 692:
1929, King George V Scroll issue, Quebec Bridge, 12c gray, block of four imperforated vertically, nice and post office fresh, full OG, NH, VF, C.v. $540, Unitrade C.v. CAD $750++, Est. $250-$300 , Sc. #156b
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