1895 Selkirk, Ont (OC 7 95) with previously used 3¢ Small Queen, illegal attempt at reusing a stamp, caught and marked with "X" and small "X" in a circle, on cover to Boston, Mass., sent to DLO with blue "DEAD LETTER BRANCH SUPERINTENDENT OCT 10 1895 OTTAWA CANADA", reverse with Dead Letter Office Canada (OC 10 1895) and much later sent to PO Inspector's Office London Canada, blue oval bs (Jan 16 1896), presumably to collect postage. The red envelope was intriguing until I discovered that it was actually a pre-printed return envelope with a paper label over top, a frugal sender (stamp-wise and envelope-wise). Very eye catching. (Image)