Canada advertising stamp covers. This collection contains 3 superb covers with circle and flag cancels. Included are 1- James Robinson Boots and Shoes Wholesale, Montreal. The stamp is a 3 cent Victoria small queen, with clear and distinct flag and circle cancels, cancelled 1897. Has a clear Oshawa, Ontario address. 1- Robert Hampson & Son Insurance Co. of North America, Montreal. The stamp is a 3 cent Victoria small queen, with clear flag and circle cancels, cancelled 1896. Has a clear London, Ontario address. 1- Massey-Harris Co. Farm Implements, Montreal, Canada. The stamps are one 1 cent Victoria small queen, and one 2 cent Victoria small queen, with clear and distinct flag and circle cancels, cancelled 1896. Has a clear Toronto, Ontario address.