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MAZDA EDISON BULB

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Recent activity32186 of 939841951 CoronadoOld Leather Bull Dog, Made in England,......WW2 Vintage?
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Posted 2 years ago

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Kollector
(93 items)

This Edison Mazda bulb operates on 220 volts. It has a 3 loop filament. It still lights up when connected to 115 volts but at half brilliance. The 115 v bulbs have 2 loops . I have 2 of the 115 v which still work with wrappers.
In the filament support tube there is a paper insert that has 5 patd dates. The latest is Apr 28 03.
I found these at an Academy Military Surplus (?) store in the early 50's when Academy was dealing in surplus. I purchased 9 bulbs,some 115 v and 220v types.
There was a large box full but I only purchased 9. Some in the original yellow wrapper. Most have been sold at auction.
Going by the patd date the bulb is 109 years old

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