(Canada Cross-Border Steamboat Mail) Steam-Boat Letter, Quebec, AU 5, 1852, crisp strike of rimless cds and matching "6d" circled rating handstamp on blue folded letter to New York City, red Montreal (8.6) transit backstamp, red "Canada" arc exchange handstamp, U.S. "10" cent due rating handstamp overstriking the 6d rating; light horizontal fold, choice and Very Fine. Estimate  $300 - 400. $0 (Image)