{Collins} Mystery Navy receiver/transmitter? Maybe Collins?

What is the unit on the left in this photo? - connected to a feed-through
on the window.

Someone on the milsurplus list suggested that the mystery rig might be
Collins? It has a Navy ID tag on the front and it might be a
crystal-controlled receiver-transmitter? The antenna connection looks like
a copper tubing leading to a feed-through insulator, suggesting it is MF or
HF. Any suggestions welcome!

(note - The big receiver in the center is a 1931 vintage RAB, so I am
guessing this is a pre-WW2 photo)

Nick England K4NYW

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