Historical information

This is a WW2 Morse code Signalling Lamp B 5A/2334 in its original wooden box.
It was probably manufactured by BTH (British Thomson Houston), who were manufacturers of the iconic ‘Aldis Lamp.’ It was used for signalling ship to aircraft and ground to aircraft using morse code.

Physical description

Timber transit box with with hinged opening top secured by non return catches containing black metal round lamp with glass face attached to a low square stand. There are two metal bars attached to lid.

Inscriptions & markings

Inside lid - Ref No 5A/2338 or 0? Hand painted in white SOS …—-…
Box front face - printed in white and barely legible “small lamp”