Can anyone identify this mic

[Mark7]

 

[Track Rat]

Looks like an RCA wannabe. I'd bet it's either dynamic or crystal.

 

[kjam22]

It looks like David Letterman's mic.

 

[Rimshot]

The prototype model for the first
Contac cold and flu capsule?

Beats me! Looks like an old broadcast mic of some sort.

 

[Track Rat]

This is an RCA 77DX.

 

[Michael Jones]

I believe that's a Calrad dual crystal mic

 

[Mark7]

By Jingo, I think he's got it Carstairs!