RAF airfield and control tower loudspeaker / tannoy.
Used for relaying announcements and radio messages.
Can be desk or wall mounted.
The 11 x 11 x 6" wooden box contains the speaker.
This has two wire connection terminals at the rear.
On the front is an Air Ministry plate with Reference numbers.
The box has its original RAF blue paint, which is in good order and the internal speaker looks to be in a very good condition, and works (has a slight split on the front cover, see photo).
Please take note that this is a fairly heavy item (4 kgs).