6 d. slade-violet, horizontal pair with clear to very wide margins, tied by target cancel to lettersheet with adjacent "TORONTO CANADA MY 18 1853" to St. John, New Brunswick with transit and arrival marks; at top small part of the cover missing due to opening, otherwise very fine. A very scarce quadruple rate cover Provenance: Sam Nickle (1993) Warren Wilkinson (2007) Joseph Hackmey (2011)