Discussion about the Korg PolySix synthesizer

Hi Group, this is a long shot, I have a 1976 Korg K-770 which is being 
restored, Korg UK have advised me that a replacement part is not 
possible from the manufacturer.

They examined the broken key I have and too a measurement, they said it 
was quite possible the 770's keys were also used on the POLYSIX.

Can anyone help me with one spare 'F' KEY

Many thanks

Regards

Neil.