Russian chess computer "Elektronika IM-05"
<a href="//commons.wikimedia.org/wiki/User:Sergei_Frolov" title="User:Sergei Frolov">Sergei Frolov, Soviet Digital Electronics Museum, http://www.leningrad.su/museum/</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>