5c Red Brown (1). Positions 1-2R1, horizontal pair, large margins to clear, cleaned-plate impression, cancelled by blue grids, matching "Buffalo N.Y. 10 May 20" integral-rate circular datestamp on buff cover with "Phelps House" blue embossed oval on backflap to Cayuga, Canada West, light strike of "Queenston U.C. May 20, 1851" transit datestamp, light strike of red "U. States" in ribbon handstamp, Hamilton backstamp, some slight overall wear, right 5c small scissors-cut in margin only, Very Fine, attractive treaty-rate use and rare hotel cover to Canada, prior to the treaty this would have required only a single 5c stamp to pay the rate to the border, USPCS census no. 5517, ex Mirsky

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