This is an Astatic JT-30C mic I got from a friend. Based on the label style, not riveted, not embossed, and font type, it's from around 1970. It has the original MC-126 ceramic element, and still has full output. I just finished buffing out the original hammertone finish on the head and base, cleaned up the chrome, changed the wind screen material, and repainted the black mast. Such cool mics with a beautiful sound! These were also called Harp mics, as harmonica players could easily hold the mic in front of the harp, cupped in the palm of their hand while playing.