Canada CL13a

1926 (July 1) (25c) Patricia Airways, Style One, top margin positional pair with Series “1” number at top left, perforated horizontally only – imperforate vertically at sides and between stamps, minor gum disturbance confined to outer margins, a very scarce perforation variety, Very Fine, Never Hinged (Unitrade CL13a; catalogue value $1,875)