Lot 677, Canada 1929 twelve cent Québec Bridge imperf pair, VF NH, sold for $402 July 24, 2020March 9, 2017 by Sparks Auctions Lot 677 Canada #156b 1929 12c grey Québec Bridge, Imperforate Vertically, mint never hinged horizontal pair, very fine. From the Wolfe Collection. Unitrade CV$375, sold for C$350 plus buyer’s premium.