Medal to the seventieth birthday of the Czech Nobel laureate <a href="https://en.wikipedia.org/wiki/Jaroslav_Heyrovsk%C3%BD" class="extiw" title="en:Jaroslav Heyrovský">Jaroslav Heyrovský</a>. Rear side with the inscription: <i>Czechoslovak Academy of Sciences to the founder of polarography</i>.
<a href="//commons.wikimedia.org/wiki/User:Harke" title="User:Harke">Harke</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>