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I just got a really nice vintage Turner microphone that is all stainless steel on the outside and has model # SR90D. I think I have seen others refer to it as the 90 D or just like a Collins microphone. Any help would be apprecitated; I plan to make it usable in a 4 pin configuration for my General Lee if possible. Maybe some of you have run across this one, I believe it was manufactured around 1959-1960's. If you have any specs or owners manual you can pdf I would greatly appreciate it. Thanks

Just got the mic in and it is very good condition and is very much vintage. It has a tension PTT switch with 4 long metal bands that disconnect and reconnect as you pust the PTT switch. The element is an Astatic 3-62 ceramic element that is heat and moisture resistant it says. It is a 4 wire hookup. 1 red, 1 black, 1 shield and 1 white. Any help would be helpful. I did find it in a 1972 turner microphone catalog.