Here is an early "anchored" two loop oval carbon filament lamp. This type of carbon filament lamp was made in the 1890's and was sold with the option of being fitted with one of a number of various manufacturer's base styles. This lamp is fitted with a beautiful Thomson-Houston brass base and it has the first true high production lamp filament. This filament was made by squirting a cellulose liquid solution through a tiny hole of an extruding die into an alcohol setting bath. The resulting fine thread like carbon was then treated, shaped and carbonized before it was mounted on the lead wires of the glass stem and then placed in the lamp globe as an incandescing filament. At that time in history this process, perfected by Edison's laboratory, was a major breakthrough in light bulb production because it was a process which lent itself well to high mass production techniques for the manufacture of incandescent lamps. Up to that time the job of creating large quantities of filaments was labor intensive hand work and very expensive, the most expensive part of the lamp. Lamps of this double oval anchored design were first commercialized under the Edison brand name in 1894. This lamp has a very early "smooth sided" brass Thomson-Houston base, secured to the glass with plaster of Paris. This lamp has a generous 3.0 inch diameter globe and is 6.25 inches tall. It is a century old and still works great.