Own work, crests of the Ruriks (based on the images from seals and coins).
<a href="https://en.wikipedia.org/wiki/User:Alex_Kov" class="extiw" title="en:User:Alex Kov">Alex Kov</a>, <a href="//commons.wikimedia.org/wiki/User:Petr_K" title="User:Petr K">Petr K</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>