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White Mazda Lamp – Un-tipped

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This bulb was introduced in 1920 as a tipped bulb and later manufactured as a tip-less bulb.  It was probably discontinued in 1925, the year outside frosted bulbs were introduced.  As with any frosted light bulb [see A37], this type of bulb, made with an enamel coating, was manufactured to reduce the harsh and uncomfortable glare ordinarily given off by a transparent light bulb. Unfortunately the White Mazda lamp absorbed more light than would a frosted lamp and thus was dimmer and was probably not very popular either.

NOTE: To see the filament, shine a flashlight through the bulb from the back and look for the shadow of the filament.


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