1851 6d slate violet on vertically laid paper, good to large even margins, tied by target cancel in black, on cover from Montreal to Toronto, showing red Montreal cds alongside, very fine, cert. Holcombe (1989) (Image)

1852-57 6d reddish purple on very thick soft wove paper, large to huge even margins, tied by diamond of bars in black, on cover from Toronto to Rochester, New York, showing Toronto cds & red PAID alongside, missing portion of backflap, an exceptionally fine stamp and very rare in this quality, cert. BPA (1960) (Scott 10, $9'000 on cover) (Image)

1893 20c Vermilion and 50c Blue mint hr (50c with large hr), fine to very fine, cert. BPB (2013) (SG £525) (Image)

1911-22 20c olive-green, mint block of four, three stamps nh, fresh, very fine and exceptional quality  (Image)