All have been tested and found to be not working.
eBay
Wired Air Conduction Headphones 3.5mm Type-C Open Ear Gaming Karaoke Headset with HD Microphone Not-in Ear Hifi Music Headset
Aliexpress UK
This is a 1970's era Atlas CO-1B adapter for any microphone stand or boom arm. This one of three I currently have listed but this is the only new in case example. The CO-1B swivels in a 360 degree motion once attached to a stand or boom arm and it has a knob that tightens to hold the adapter in place firmly once attached.
eBay
P47 Foldable Wireless Bluetooth Headphone With Microphone Headsets Bass HiFi Sound Music Stereo Earphone For Smartphones TV Game
Aliexpress UK
You are looking at a rare and unique variant of the 1940's Electro Voice 1st generation 630 microphone. These 630 mics also have an omni-directional pattern. It will still make a great mic for any live event or a lovely display piece in any mic collection and very unique due to it's rarity.
eBay
TypeC Wired Headphones For Lightnig Phone 15 16 14 13 12 11 X XS Pro Max With Mic Earphones Universal Samsung Xiaomi USB-C Phone
Aliexpress UK
100% complete. The mic has no signal so this really should only be used for prop purposes. Front screen is in very nice condition with zero dents or corrosion. Just lite tarnish. The mic does not work.
eBay
Y08 Macaron Wireless Bluetooth Headband Headphones with Mic Stereo Gaming Headset Gamer Girl Gift for Mobile Tablet
Aliexpress UK
This microphone works, sounds full range, ready for sound reproduction. No two pin connector or cable. Stand Not Included. Appears to have been in storage. Estate Sale item.
eBay
Cute Cat Ear Bluetooth Headphones LED Light Flash Stereo Foldable Wireless Headsets With Mic TF FM For Children Kid Girl Gifts
Aliexpress UK
This is all original Electro Voice V-1. Made in USA ,STAND NOT INCLUDED.
eBay
3.5MM Gaming Headphones Over Ear Game Headset With Microphone Volume Control Noise Canceling Earphone For Computer,Laptop
Aliexpress UK
Shure mics like the SM58 and SM57 models will be too wide for this case and the lid won't shut properly. My photos actually look worse than when you see the case in person. The scratches and scuff marks are present of course but seem much more noticeable with these pictures.
eBay
Flash Lamp Cute Cat Ears Headphone Bluetooth5.0 Stereo With Mic Support TF Card Wireless Kids Girl Earphone Birthday Gift
Aliexpress UK
As seen in pics # 6, 7 & 8 this adapter fits on any desk stand and then allows the BK5A model, 44BX and 77DX model mic to be mounted. You are looking at a very nice older used AD-1 model microphone connector / adapters used primarily on RCA & Electro Voice model microphones but also a few Japanese ribbon mics.
eBay
Shock Bass Headsets Wireless Bluetooth Headphones HIFI Sound Noise Reduction Sports Gaming Earphones with HD Mic Support TF/AUX
Aliexpress UK