I'm in the UK and after a two row C/G Lachenal or Jones with an extra button at the top end of the C row. I know there's a 22 button unit that will provide this but they don't seem to be very common. If anyone has such a unit lying around gathering dust .....
UPDATE: PLEASE IGNORE THIS - CHANGE OF PLAN!
(I'd delete this if I could find a way of doing it!)
Edited by geo3geo, 15 October 2014 - 01:48 PM.