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 Voltage- 110-120v Wattage/rating- 200w Filament- Tungsten coiled, 5 supports Cap type- US Mogul (E40) Circa- ~1914 Finish- Daylight blue coloured glass Origin- USA A large 500 watt Mazda C-type lamp, just over 9 inches tall. These were the first coiled tungsten filament lamps (which are still used to this date and have remained largely unchanged), introduced in high wattage types in 1913. A year later these "smaller" (but still impressive) 500 and 200 watt types were introduced. Daylight blue glass was used on some of these for factory lighting- it gives a purer whiter light that is more natural and pleasent to work under. This idea is still used today, daylight-blue coloured bulbs are quite often used for close-up work. |
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