My first throatmic Kmf b

My first throatmic (Kmf b) from eBay on 2015, came without plug, bought any three prong plug available then to match with it.

Based on this sample and other relic of neckbands, speech capsules and switch the replica throatmic had born.

It is still on display in my room, but not until now recalled the big three prong was a add on by myself.