WTB: Pathé Le Menestrel or Gaulois tracking bar and half-nut

[erunltd]

Looking for a Pathé tracking bar and half-nut like the one in the pics.
Pathé half-nuts are unique as they are fine threads (50 per inch) which is
not the same as an Edison GEM. European machines use threading in
millimeters not inches.

If you have one of these, let me know. They are commonly found on the
Pathé Gaulois which looks like an Edison GEM.

A special thanks to Mike Sorter for the pics of the exact bar and half-nut
I'm look for.

Martha Grant and her pet dog Zenith need not reply.

Thanks for looking.