USSR stamp, P.N. Yablochkov, 1951, 40 k.
Processed by <a href="//commons.wikimedia.org/wiki/User:%D0%A1%D0%B4%D0%BE%D0%B1%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2_%D0%90." title="User:Сдобников А.">Andrei Sdobnikov</a>
15 May 2008 (original upload date)
Personal collection