Interesting 1930's mirrored high bay fittings with induction lamps

In one of the older hangars at the museum. These fittings are, I presume, original to the building and would have been fitted with filament lamps (in fact there is an older photo here on LG showing such an example at the museum). Most were fitted with some fairly cheap self-ballasted induction lamps (quite greened-out as shown in the photo!) but some like the one on the top left were fitted with standard domestic LED filament lamps!