This wonderful early Edison Mazda "tipped" light bulb is in excellent "working" condition and operates at 60 watts, 120 volts. It has two 1904 Patent dates stamped into the Edison brass screw base. It also has a beautiful Bryan Marsh "Crown" paper label and a second paper label which gives the lamp's specifications. This Mazda light bulb measure 7.25 inches and the glass globe is 3.0 inches in diameter with an etched "MAZDA" logo.. The glass is crystal clear with no carbon build-up and the internal support stem has the heavy 7 - over - 8 copper support hooks. The most enhancing feature of this lamp is the beautifully smooth externally etched "Frost-Top" dome, a rare and valued plus for serious Mazda light bulb collector's. Frost top bulbs are also desirable because they give off light with reduced glare and still allow the filament to be seen.