Brass medium screw base with glass insulator, tungsten filament, T-shaped envelope. Stamped: "26437". Donor’s card reads: “Ballast lamp made by the Western Electric Company about 1930 for use in ...
A brass mogul screw base with glass insulator, angled leads, crimp connectors, wavy tungsten filament, mica insulators. T-shaped envelope. Donor’s card reads: “Ballast tube made by the General ...
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