What voltage lamps does it take? Are they just a standard MES socket?

The color contents of bakelite varied a lot with different manufacturers

In Soviet electrical devices over many years it was virtually always the case that the color of a device was a bit random, often pink, beige of varying degrees of paleness etc. Sometimes streaks following the pattern of powder fill if it hasn't been mixed between batches. I think that was actually preceived as a feature and tbh made things nice and interesting

Over here bakelite components were generally of high consistency, on par with those of western Europe manufacturers, but even then you would occasionally find a FL tube socket from the 70s with one half white and one half pinkish or with translucent inclusions etc

I've just got one of the more traditional design myself, mine is green with the bell shaped shade

I wonder if that sort of nightlight setup dates back to the wartime era where it was used as low level/blackout approved method of lighting - cos I've seen the pics on here (or LG for sure) of these 'torch/low voltage minuture bulb' to B22 adapters that were for blackouts, the only difference is that they had the bucket shaped area where the lamp was situated. This one defo looks more like a 50s era makeshift nightlight that you'd use in your bedside light