Banner of the Empire of Trebizond (c.1385)
<a href="//commons.wikimedia.org/wiki/User:Samhanin" title="User:Samhanin">Samhanin</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>, source: <a rel="nofollow" class="external text" href="https://archive.org/details/LibroDelConocimientoDeTodosLosReinos">&lt;Libro del conocimiento de todos los reinos&gt;, (c.1385)</a>, <a rel="nofollow" class="external text" href="https://archive.org/details/LibroDelConocimientoDeTodosLosReinos/page/n47">n47</a><br>Other sources: <a href="//commons.wikimedia.org/wiki/File:1375_Atlas_Catalan_Abraham_Cresques.jpg" title="File:1375 Atlas Catalan Abraham Cresques.jpg">&lt;Atles català&gt; (c. 1375)</a>, <a href="//commons.wikimedia.org/wiki/File:Portolan_chart_of_Guillem_Soler_(c.1380,_Paris).jpg" title="File:Portolan chart of Guillem Soler (c.1380, Paris).jpg">&lt;Guillmus Soleri civis maioricaru me fecit&gt; (c.1380, Paris)</a>, <a rel="nofollow" class="external free" href="https://archive.org/details/s2bookofknowledg29markuoft/page/n109">https://archive.org/details/s2bookofknowledg29markuoft/page/n109</a>