old Amphenol connector question

I have a male metal-shell connector, with 3 asymmetrically placed pins , made by Amphenol, which latches via a screw-on collar. I used to see these on ham radio mikes with PTT, etc. I could probably match it by comparison with the Digikey catalog, but I'm asking here to increase the chance that I get it right.

Bob Morein
(310) 237-6511