OSOAVIAKhIM. Brass, enamels. Two-piece construction. The writing on the background is “KVZhD” – Cyrillic abbreviation for the Chinese Eastern Railroad.
In fine overall condition. There are several chips on red enamel. Very nice eye appeal.
The badge was issued to the servicemen of the Order of the Red Banner Far Eastern Special Army (OKDVA) who participated in the 1929 campaign against the Manchurian warlord. This “lightning” offensive led by Marshal Blyukher reestablished Soviet control over the strategic railroad built by Russia in the early 1900s.