RARE WW2 GERMAN KRIEGSMARINE 'OFFICER OF THE WATCH' DUTY BADGE BY ASSMAN
Only one of this badge was given to crew members of vessels, or shore facilities, and it would have been transferred between crew members as they went on watch duty. They were not issued to individuals. In the reference book "Torpedos Los!" by Gordon Williamson (published in 2006), this badge is number 124 in their list of insignia. The badge would be worn on left breast pocket.
This example shows signs of use and is maker marked 'A' for Assman. Examples of this badge are considered rare because of the limited amount issued.