In 1937, golden hammer and sickle were added in the top left hand corner, with beneath the Latin letters "AzSSR" in a serif font in place of the Cyrillic letters. A third version was issued in 1940s, and had "AzSSR" replaced by its Cyrillic version "АзССР". The last version of the flag was adopted by the Azerbaijan SSR on October 7, 1952. It was the flag of the Soviet Union, with an horizontal blue band on the bottom fourth.