Check the listing for details. Otto vonBulow signed photo. U-Boat Cpt U-3. U-404. Oakleaves winner.... Condition: Used. Listed at 40.00 USD. Signed 3.5 X 6 post war signed photo of Otto vonBulow. . From Wikipedia...Bülow joined the Kriegsmarine on April 1, 1930, and completed his basic training in Stralsund. His first assignment was on the Niobe, a German training ship, from July until October 1930. He then served on the Light Cruiser Emden until the start of 1932. He then went back to Stralsund for more training, and between 1932 and 1933 he trained at the Naval Academy Mürwik. In 1933 he was stationed on the battleship Deutschland, where he was Battery commander. He later served on the Emden, the Schleswig-Holstein, and later on a landbased assignment in Pillau until 1940. In April 1940 Bülow transferred to the U-boat service, and completed his training on November 11, 1940.