Cordata ATP logo.
<a href="https://en.wikipedia.org/wiki/en:Corona_Data_Systems" class="extiw" title="w:en:Corona Data Systems"><span title="supplier of IBM PC compatible computers in the 1980s">Corona Data Systems</span></a>
I created this image by taking several photographs of a Cordata ATP, merged them in GIMP, and traced the result in Inkscape.