Lot 11 Canada #5a 1855 6d brownish grey Consort Imperforate, used with centrally struck 4-ring #37 (Québec City). Four margins and very fine. Ex. Vincent G. Greene Sissons sale (Feb 1975). Accompanied by a 2016 Greene Foundation certificate. Unitrade CV$2,400, sold for C$1,000 plus buyer’s premium.