gas filled coiled tungsten lamp
- Made:
- circa 1927 in England
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Science Museum Group
© The Board of Trustees of the Science Musuem
Siemens Bros & Co Ltd gas filled coiled tungsten lamp in
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Siemens Bros & Co Ltd gas filled coiled tungsten lamp in original packing, c. 1927
