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Author Topic: (Rare?) Westinghouse Mazda Blue Light Bulb  (Read 274 times)

Offline Kefo

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(Rare?) Westinghouse Mazda Blue Light Bulb
« on: June 24, 2018, 06:48:42 pm »
Hello all,

I have recently acquired a large box containing many dark blue light bulbs. They are made by Westinghouse Mazda, rated at 25 Watts and quite unusual to me. I have searched quite thoroughly but couldn't find a match on the internet. They also came with an old quality control certificate (see image).

I was wondering if anybody had a clue as to what these might be used for? I saw some with a more cylindrical shape that appeared to be used for a sign of some kind but I am not sure if that is actually what these would have been used for.

Any clues would be appreciated!

Thanks for your time,

Kefo