Newfoundland, 1921, 35¢ "Halifax" air post with varieties. Two flown covers, one with General Post Office corner card and franked with "no period" after 1921 and 1½mm spacing between "Air" and "Mail," the other "with period" and 2½m spacing; both covers with some faults, each with Feb 4 Halifax receiver on reverse, stamps F-VF, F.-V.F. Unitrade No. C3b, C3f C$720 ($732). Scott No. C3b, C3f. $0 (Image)