Inert 25mm Soviet Union shell casing, used in the 25mm 2M-3 by the Soviet Union. This 25x218mm brass casing is in good condition but has a few dents. The 25mm 2M-3 is a Soviet Union naval turret. It was developed shortly after WWII to arm various smaller combat ships, submarines and civilian ships supporting the navy. The 25mm guns are unique to the Soviet navy and were not used on aircraft or land based applications.
