Cherry M9 unknown type 1, demonstrated to have the same keycap mount as Cherry M51-0131, using Commodore 64 keycaps
Daniel Beardsmore
<a rel="nofollow" class="external text" href="https://deskthority.net/wiki/File:Cherry_M9_unk.1_--_keycap_mount.jpg">Deskthority</a> (<a rel="nofollow" class="external text" href="https://deskthority.net/wiki/images/d/d8/Cherry_M9_unk.1_--_keycap_mount.jpg">direct link</a>)