Here are two RCA MI-6206 Aeropressure Dynamic Microphones from the 1950's (2 available at $150 each). These Aeropressure microphones were similar to other RCA omni dynamic microphones of the time. These have an extremely colored sound and are best when a "vintage" and crispy bright tone is preferred. When used for effects, these can have a distinct sound that adds character to a mix. Both of these have been serviced with new XLR cables and standard stand adapters. If you've been looking for a distinctly vintage sounding microphone with a bright tone, one of these MI-6206 Dynamic Microphones is for you!