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Info about this bulb
Rating: 115v, wattage unknown (25w?)

Came from: U.S.A.

Manufactured: 1910's (est.)

Purchased: March 2003

Price paid: $6 plus sh.

Bulb rarity: Extremely rare

Best feature: Unique filament design



National Mazda Squirrel cage Lightbulb

National Mazda S-15 filament Squirrel-cage Lightbulb Bulb turned on at low voltage (65v)

I knew nothing about this bulb until my friend Chris Millinship (Owner of Bulbmuseum.net) identified it as a "S-15 filament Squirrel-cage lightbulb". This bulb has center supports for the filament in order to make it more vibration-resistant. It could also have been made this way to improve downward illumination. Manufactured by GE. Any additional info for this bulb will be gladly accepted.

Related links:

Additional pic of this bulb #1
Additional pic of this bulb #2
Additional pic of this bulb #3


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