The original medal of the USSR period has a pin on the back for attaching to the jacket.
Full size: 8.6 x 3.2 cm, weight 22g.
The Jubilee Medal, "30 Years of the Soviet Army and Navy," was a 32-mm-diameter circular brass medal. On the obverse, the right profile busts of Lenin and Stalin (nearer); at the bottom, the relief Roman number 30.
