Description
Tubular lightbulb with transparent clear glass. Metal and lead base with glass and metal filament. Inscription on top "110V 500W MAZDA gas filled b.t.h. patent 403 made in england".
Mazda 110V 500W Projector Lamp Type 403
Inventory Number 78692
Acknowledgement: © History of Science Museum, University of Oxford, inv.78692
