Canada CL13i

1926 (July 7) Red Lake - Sioux Lookout First Flight; Buffalo Suburban Securities Co. Inc. envelope franked with 2c green Admiral tied by grid, Red Lake split ring at left and light green flight cachet; on reverse an extraordinary (25c) Patricia Airways, Style One, lower margin horizontal pair, green route inscription, showing INVERTED "RED LAKE" marginal inscription in addition to a Dramatic Shift (15mm to left), neatly tied by same departure Red Lake split rings and further tied by next-day Sioux Lookout CDS on arrival; a fabulous airmail cover ideal for exhibition, Very Fine and UNIQUE (AAMC CL13i-2602a; Unitrade CL13i variety)