How old is my Mic?
JT-30 s have been in constant production since WW-II. Astatic has not been concerned with collectability of the JT-30 and would rather that you buy a new one. They don t have any records of the serial numbers (at least not that they will tell me). Astatic Laboratories microphones appear to be late 30 s early 40 s. The JT-30 may have been first produced in 1937-39 in a period when Astatic was branching out to a variety of microphone and phonograph pickup solutions. They produced microphones for World War II and the Brown Astatics with the Astatic Laboratories label are from this period. Some time in the mid 1940 s, Astatic moved to Conneaut Ohio where they are still located. The name of the company changed to Astatic Corporation. The gray hammertone mics are often from the 50 s and 60 s. The earlier mics have a Patent Pending stamp on the label. Then the labels say Patent Numbers inside. In the late 50 s and 60 s the label has a patent number on the label and no serial number. The gray
