On 14/01/2019 09:31, D.M. Procida wrote:

snip

So likely to be a high-powered, standard mains voltage bulb?

If it is mains, there probably wasn't a 'standard' supply voltage when
it was made.

I assume it would not come to any harm run at a lower voltage, though I
know that some lamps can darken as the result of deposits on the inside
of the glass when run dimmed.

Daniele


Cheers
--
Clive