Thanks to everyone for throwing some "superior light" on this.
The suspect bulb is indeed a 12v 5w MR16 – not something I have in stock but no doubt I can get one when the Corona dust settles.
I will aim to check the power supply first, however, and the Ikea will serve for the time being. I think I caused some confusion above: the Ikea replacement is a whole lamp ie base, gooseneck and integral bulb.
Howard Lewis:
I took your first standard to be standard as in standard lamp – sorry for any confusion!
As it happens, I have a vintage Anglepoise which could find a permanent home on my desk and, with some modification the SR could make a useful machine lamp.
Edited By ega on 14/04/2020 21:05:25