Morse switch box

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What was this for , anyone explain ,??
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A WWII RAF (brits) Vickers Wellington Morse Code Sender Key - the A[crown]M gave it away, Royal Air Ministry

Unlike the ‘Bathtub’ Morse Code Sender Key used by the aircraft’s Navigator to communicate with Bomber Command’s network of wireless transmitters across Southern Britain, the cockpit Morse Sender Keys were directly linked to a small white, tear-drop glass communication lamp just forward of the Top Gunners Turret.

The Morse Code Lamp was used for air to air communication with other bombers nearby when radio silence was required.

It was also on Spitfires as well as the Lancaster bombers.


These fetch a pretty penny, especially for aviation enthusiasts.
To a non-collector they can range from £145.00 (~$200) low end (working condition) and exponentially grow in value if you have background bonafides on what it came out of and the sender box.