1857 (Aug. 20) Cadiz, Spain to Boston, Mass., folded letter carried by sailing ship to London where "Ship-Letter" straightline and "8" pence ship letter due handstamp struck, red London (10.21) backstamp, ms "32" G.B. debit to U.S. for the 16¢ ship fee plus 16¢ transatlantic fee, carried by Cunard Line Canada from Liverpool Oct. 24 to Boston arriving Nov. 5, Boston (11.6) arrival backstamp and matching "37" cents due rating, Very Fine, a scarce sailing ship and steamship usage. Estimate  $200 - 300. $0 (Image)