Art Exhibition 15 Years of the Red Army

Group photo taken at the exhibition "v years of the red army" or "x years of the red army". For example: s. M. Spirin, i. G. Drozdov, m. B. Grekov, i. F. Kolesnikov, g. N. Gorelov, v. A. Zverev, v. N. Yakovlev, e. M. Cheptsov, m. I. Avilov, v. A. Kuznetsov, i. A. Vladimirov, n. I. Dormidontov, s. A. Pavlov. Date: by 1929 at the latest (1923 (?), 1928 (?) ).