replying to trader_4, Iggy wrote:
It's highly plausible that someone else re-wired the lamp long before her and
might be the reason they got rid of the lamp for her to end up with it.
The *most* common Lamp Sockets are just screws. Overwhelmingly, *only*
hardwired light fixtures use wired sockets.
https://www.homeownershub.com/img/ba
https://www.homeownershub.com/img/bb
https://www.homeownershub.com/img/bc