WANTED: COLUMBIA DISK PHONOGRAPH GEAR

[erunltd]

I am looking for the Columbia gear as shown in the 3 photos.
It measures almost 3.5" wide. The problem can be seen in the
photo with the red arrow, the gear is worn down and slips through
the gear train when the winding spring gets tension.

This can be found in early Columbia phonograph motors such
as the AJ top-wind and possibly in other early models. If you
have a loose one available, let me know. A parts motor
with a good gear would be OK.

Thanks for looking