Strange box

[youngtug]

I purchased  this box and would value any thoughts on what it is under the false base of it;

[youngtug]

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[youngtug]

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[Jool]

Hi, could it be a morse code machine (don't think that's the correct term, but you know what I mean  )

Got a bit distracted by the glass of wine in the photos 

[ITBookworm]

Hubby (a radio amateur) reckons that it might be a crystal radio set. The puzzle is what the bit that appears to be a morse key is for. Apparently a crystal radio is for receiving a signal only (so doesn't need a battery) but to transmit a battery would be needed.

Does it come out of the box? Can you take a close up picture of just the "radio" bits for a closer look?

[youngtug]

It doesn't come out and there are wires from the two terminals on the left hand side, so an electrical supply of some sort was used..

[youngtug]

External view;

[emmygee]

Hi,
That is the mechanism of an electric bell in the back right corner of the base, so I would guess that it is an anti-tamper device.
Cheers
Maurice

[youngtug]

But what triggers it?