DUN-121 Toronto (Sep 5) duplex with 8 pie shaped segments and notch on 10:00 segment, ties #37 3¢ Small Queen on cover to Brockville, Ont, 1874 use, with pin holes in central part of cover from pinning correspondence. This postmark was used for a short period of time, Sept 3 to Sept 25. This is the third day of use. (Image)