[Collins] Need info: person who makes machined knobs for S-Line and A-Line

[C E]

Hi:
Up to about a month ago, there was a machinist who was making reproduction knobs for the S-line and A-line Collins radios.  This man is no longer advertising but on a whim, does anyone know who this guy is and how I may contact him??
 
And no, I am not looking for the brass Jupiter knob of yore.
 
Cal, N6KYR/4