U.S.-Canada Cross Border Stampless, 1852 folded letter sheet to Montreal, all strikes clear and complete: blue St, Albans, Vt. 2/26/(52) cds with matching "10" handstamp, red arced "U. States" with shield, Canada "6d" marking, backstamped red Rouse's Point, NY 2/27 handstamp and red Montreal 2/27/52 split ring receiver, Very Fine (Image)