Vintage SHURE Model 545 UNIDYNE III
I love the sound so much! xD
Great on Guitars and Vocals.
A predecessor of the legendary SM 57.
Silver and black, made of die-cast zinc and “Armo-Dur” (Shure’s own bakelite like plastic).

- Type: Dynamic
- Polar Pattern: Cardioid
- Frequency
Responce : 50 to 15,000 Hz - Impedance: high- or low
- Housing: Silver and black, made of die cast zinc and “Armo-Du”.

This microphone a 4 pin connection and has the special screw fitting cable.
The cables go from that 4 pin screw fitting toxlr .
There is also a new model called
“Shure 545 SD” but have not heard it.
See also:
http://www.angelfire.com/music/harmonica/shure545.html
https://www.vintagemicworld.com/html/Mic%20of%20the%20month%20October%202014.html