Trying to identify a very old household bulb?

I am trying to identify a very old florescent bulb that stopped working and I am looking to replace. Specifically I am interested in the likely voltage of this unit and I would like to replace it with an LED equivalent. The bulb is coated white and measures 61cm long by 3cm wide. It has sideways facing contacts for plugging it into the lighting mount which is the same length. The contacts are bigger than anything I have seen before and measure 11mm in diameter with a probe depth of 18mm.

I would be very grateful for any help.

I think that is a festoon, not a fluorescent. i.e a long filament right along the length.

I think you are right. I can just make out a single filament running the length of the bulb. Any ideas about the voltages used. There are no markings on the bar and I would need to remove the housing appliance to get a multimeter on it?

B0M0A0K said:

I think you are right. I can just make out a single filament running the length of the bulb. Any ideas about the voltages used. There are no markings on the bar and I would need to remove the housing appliance to get a multimeter on it?

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They were certainly available for standard mains, 240 volts, but quite possibly for other supplies too.
https://www.ebay.co.uk/itm/18440655...JYSaZuznB73XsM85XQ-nGgwHsTfVmpGUaAsK1EALw_wcB

It is/ was called an Architectural Lamp…..you’re welcome
Available in 2 possibly 3 sizes

I have not seen one of those fittings for many years, the last time I bought a lamp for one was back in the late 80's the wholesalers was well known for having lots of old stock even shelves of ¾ and inch conduit fittings

Not difficult

https://www.lampco.co.uk/collection...sEiWeyGuR3mDRePjbGhyu-ObPXUq7f1LBZa3kQVUqXB7M