№121800ddffg

USSR. The buttonhole of the sergeant major of the rifle units of the Workers' and Peasants' Red Army 1935-40.

The insignia "cocked hats" were made by the Lenemalier artel. The trophy of the "winter company" - the Soviet-Finnish war of 1939-40..

Hot vitreous enamel, copper-plated steel. It's magnetic. Mounting on screws.