cover 12c Black (17), horizontal pair, three large margins, slightly cut in at left, tied by grid cancels on small neat 1856 folded letter to Alatzi, Italy (Roman States), the pair is also tied by a red "New-York Am. Pkt. Feb 23" exchange h.s., prior red "New York 19 Feb 20" exchange h.s. (indicating 19c credit to England) deleted by red grid, ms. "p. steamer via Liverpool, England", red French transit, red "Via Di Mare" Italian h.s., ms. "38" (decimes) due mark, Paris and Rome backstamps, carried by the American Ocean Line steamer Washington, this cover represents a 3c overpayment of the 21c British Open Mail rate to Italy by American Packet, very fine photo