Information Sheet
Rating: 250v, 50w

Came from: U.S.A.

-1960's? 1970's?

Purchased: February 2003

Price paid: $7 plus shipping

Bulb rarity: Rare

Features: "Boxy" filament

G.E. 250v Rough Service Lightbulb

This bulb is specially designed for rough service applications, specifically those in which vibration is a major problem. The filament is held in place by an astonishing number of supports: 18! It's rated at an unusual voltage: 250v. It was probably still meant for 220v, a voltage at which a 250v bulb would burn cooler and thus last much longer (in the same way very long-life bulbs for 120v circuits are usually 130, 135, or 140v, such as in old incandescent traffic signals). Definitely a tough bulb! I don't know when it was made, but my guess is it's from the 60's or 70's. Any additional info will be appreciated.

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