[NJARC] Old microphone

[Dave Dean]

Has anyone seen, or have knowledge of , a screw-in microphone element?  Socket size is same as a light bulb.  Age would be late 1920s or early 30s.  The DVHRC has the brass base stand with the push to talk button and cloth covered cord.  I have gone through what we have in old microphone catalogs, and on line, but am drawing a blank. We would like to restore this interesting item.
Thanks,
Dave

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