English: Portrait photograph of soviet politician and RKP(b) member Sergey Syrtsov, designating him as the new Chairman of the Council of People's Commissars of the Russian SFSR. Therefore the photography must have been taken before 21st June 1929.
Русский: Портретная фотография советского политика и члена РКП (б) Сергей Сырцов, обозначающая его как нового председателя Совета народных комиссаров РСФСР России. Поэтому фотография должна быть сделана до 21 июня 1929 года.
This work is in the public domain in the United States because it meets three requirements:
it was first published outside the United States (and not published in the U.S. within 30 days),
it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
it was in the public domain in its home country on the URAA date (January 1, 1996 for most countries).