SH35 Wehrpass for a Kriegsmarine Maschinengefreiter lost on U-633

Wehrpass for a Kriegsmarine Maschinengefreiter lost on U-633, complete book with clear photo, a photocopy of a letter from U-Boot-Kameradschaft Kiel e.V. dated March 1993 states U-633 was sunk by a British bomber but u-boat.net (URL below) states that the boat was sunk by the U.S. Coast Guard cutter USCGC Spencer southwest of Iceland on 8 March 1943 with all hands (43) lost, subject would have been twenty years old at the time of sinking, USD $700 SOLDhttps://uboat.net/boats/u633.htm