1940, war navy, army postal service official letter (DIN A5 size) with mute stamp from 13.12.40 to Kiel as well with service- and letter stamp army postal service no. M 16287 = Battle ship "Bismarck", the at that time in Hamburg lay; army postal service official letters the "Bismarck" are rare; the letter has a crease in the middle, otherwise but good condition