Partly-printed vellum DS, signed "James K. Polk" as president and "James Buchanan" as secretary of state, one page, 13 x 15, September 12, 1846. Scalloped-top ship's pass issued to the "Ship Atlantic, James Coleman master or commander…To pass with her Company, Passengers, Goods and Merchandize, without any hindrance, seizure or molestation." Boldly signed at the conclusion by President Polk and countersigned by Secretary of State James Buchanan. The crisply embossed white paper seal affixed to the lower left remains fully intact. In very good to fine condition, with soiling, light staining, and repairs to small areas of vellum loss. An attractive format which boasts especially bold writing and signatures.