This connector is actually a microphone connector. It is an Amphenol 91-PC3F. The mating connector is 91-MC3M. I've attached the datasheet. These are now obsolete. I found one on Ebay (NOS) and bought it. Be warned, though, that since these are used on microphones (both ham and professional), the audiophiles create a demand which runs the prices up. I also found several people making cables with the other end being an XLR connector. Hope this helps.
Gold plated pins were never an option. The contacts seem to be somewhat of a tuning fork with high pressure. I would not expect a problem.