Interesting.... the first "Cordovox" was a 'side-by-side' unit with the treble (piano keys) on the right side and the bass (buttons) on the left side ...
This is the cordovox accordion model I still have:
http://www.twiggy.com/A19.JPG
t.

[This message has been edited by tony mads usa (edited 06-20-2008).]