Canada CL13i

1926 (July 1) (25c) Patricia Airways, Style One, green route inscription; an extraordinary mint vertical strip of three, lower left corner margin Series “2” number and showing full Red Lake and inscription notes at left, displaying the rare INVERTED "RED LAKE" marginal inscription on all three and of which is additionally shifted horizontally (16mm) to one side to dramatic effect. Well centered with bright colours on fresh paper and displaying full original gum. An incredible multiple that will become a highlight of any advanced airmail collection, Very Fine, Never Hinged (Unitrade CL13i variety; catalogue value $18,000+)