OK...Who has one of these? c'mon, fess up. Metal WE

[RB]

My Bro Texts me, He is at a swap meet, and sees this.
Metal WE, 29/w Transmitter, 21 condenser, a single switch hook. and a 1uf cap.
He asks, want this?
I hesitated...not really. and replied yes.
He responds, He buys, I pay ship.
Well,,,OK. so here she is.
I know ziltch about this thing.
Rail road maybe???
Hotel intercom???
it has no ind coil, and the xmitter has no connections.
Also, the Receiver cap is broken,bonded to the shell, and the diaphram is missing. Bummer.
Will need a Receiver.
And maybe a ind coil too???
any info would help. and comments please.