SG2. 1851 (16 August).
6d Slate-violet.
Superb used with beautiful colour and large margins, on immaculate cross-border envelope from Queenstown U.C., Via Dunnville to Wyoming County, New York. Red 'CANADA' in boxed curve, Red 'PAID' and '10' (cents) charge mark in Red.
David Brandon Certificate.
Scarce and Exceptional Quality.