Herb Jana Olbrachta
<a href="//commons.wikimedia.org/wiki/User:Wereszczy%C5%84ski" title="User:Wereszczyński">Wereszczyński</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span> Own work, elements from Wikimedia Commons, sources: <a rel="nofollow" class="external autonumber" href="https://histmag.org/grafika/articles6/orzel-bialy1/olbracht_min_550x849.jpg">[1]</a> <a class="external autonumber" href="https://pl.wikipedia.org/wiki/Jan_I_Olbracht#/media/File:Jan_Olbracht_seals.PNG">[2]</a>