Staatswappen der Sowjetunion
Von Madden, reworked by F l a n k e r - Own work from Image:Soviet Hammer and Sickle and Earth.svg and Image:Soviet coat of arms.svg. It was then corrected and is believed to be close to official version, for example, one from the 3rd ed. of the Great Soviet Encyclopedia, available online here, Gemeinfrei, https://commons.wikimedia.org/w/index.php?curid=926877