Lot 1744, Canada 1918 25c red and black Aero Club of Canada Toronto to Ottawa, mint hinged tête-bêche pair July 24, 2020May 15, 2019 by Sparks Auctions Lot 1744 Canada #CLP2 1918 25c red and black Aero Club of Canada Toronto to Ottawa Flight, a mint hinged tête-bêche pair, quite fresh and very fine. Unitrade CV$1,750.