"Underwriters laboratory does not make lamps or parts. They are a testing agency, for insurance purposes (long sketchy history).
Good way to date a lamp is to look at the socket The threaded liner is aluminum, which dates it to roughly…"
I recently bought these lights and would like to know more information on them. They came with the globes and were made by Underwriters Laboratories Inc. If anyone know any information please educate me on these items. The four armed light has the model number E41565 and an issue number C-282, 565 (that 8 could be a 6). The two arm has two labels, the first says that the model numbers E-5128 and the issue number is C-491,098. It also has a Union Made label with the numbers G35887480 on them. See More