Wanted: A few 19 set bits

[Bruce Parker (RIP)]

I'm trying to restore a British Mk.III 19 set (thanks Peter S) and need a few bits:

"A" Two fuse holders. These have the slot for removing the fuse unlike the cone shaped Canadian ones.

"B" On switch. Looks like a black plastic light switch.

"C" cables (or even just the plugs) like the ones left and right of "C".

"D" A variometer for the High Power set. It is different than the usual 19 set variometer and has numbers on the dial. Are there any of these out there loose?

Also interested in a complete British Supply Unit No.1 Mk.III.

Lots of parts to trade if that helps.