KC heres my response from a Russian/Soviet era collector:
The medal is a Gold Star Medal, accompanying the Hero of the Soviet Union title. This HSU is Air Force Captain Nikolai Frantsevich Gastello (born on 6 May 1908 in Moscow), who commanded the 4th Squadron of the 42nd Long Range Bomber Aviation Division, 3rd Bomber Aviation Corps. He died on 26 June 1941 during a combat mission, when his bomber was hit and caught fire. Gastello crashed the burning aircraft into a grouping of enemy troops. He was awarded the HSU title on 26 July 1941.