Transparent Silver Lamp Cords Sets, blend with glass lighting, almost disappearing. 20th century narrow size was frequently used on early lighting. Standard insulated 18 gauge wire has 2 parallel copper wires. The positive/hot is smooth, neutral/negative - has ribs. U.L. Listed for table & floor lamps were cord is exposed. Stripped, copper-tipped ends simplify wrapping wire around socket screws. Molded-on plugs are polarized and permanently attached to lamp cord. SPT-1 rating has traditional plastic insulation, see below.
The thickness-rating provides varying degrees of resistance to heat and abrasion. Higher SPT rating numbers provide more resistance to abrasion and more protection from electric shock.
Makes a lamp you are afraid to plug in as safe and attractive as when it was new. The cords look original except that they are clean and add the safety of a polarized plug.
Paxton has a great variety of cords for all the great Goodwill lamp finds!