We had mics like that in the control tower at SLC when I started training as an airport traffic controller with the Civil Aeronautics Administration in 1950.
I am in the process of re-purposing a very old microphone as you can see in they lower picture, FEB 1944.? A new microphone cable should be here next week.?? The carbon element inside was bad so I went for a MAX9812 Microphone on a board for $1.75 on eBay.? This microphone was not from a telephone.? Any guesses?
