Having restored my Compact Duo, I'm still looking for ONE specialty part: one of the three red lenses for the indicator lights between the two manuals.
On the *early* Duos, these lenses were dome-shaped and contained part of the bulb contacts; this is what I need. In later Duos, and on other Farfisas I've seen, they are cylindrical and function only as lenses.
I'm aware that I could replace the lamp holder--or all three--with other indicators, but I've been holding out on doing that, hoping I might eventually find an original replacement, which would probably have to come from a parts organ.
This is one of the many oddball parts that Farfisa used, including some of the hardware, much of which is British Standard Whitworth rather than common US/English or Metric.