Panel Ident

I was passed these black panels a few years ago and despite many years of looking I have not been able to get them a clear ident.

I tried again today and by stripping off the paint on the back – got a little closer.

The parts are all numbered 368 C4 X PA806; 368C2 25 C364 and 368C2 4? D863.

There are inspectors stamps all badly struck- but by sticking several images together I think they read as WB Ltd.

The panels are post war – black – anodised and I assume British. I also assume that they are internal to a cockpit.

Any assistance greatly appreciated.