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CANADA - OFFICIALS 1949-52 FINE MINT COLLECTION including 1949 7c Air, 1949-50 1c to 5c 'O.H.M.S.' overprints in blocks of four plus 50c single, 1950-2 'G' ovpt complete set (O178/90), 1952-3 & 1953-61 sets, 1955-6 set in imprint blocks of four, 1950 Special Delivery both overprints (OS20/1). Generally very fine, lightly hinged condition (68 stamps).