https://www.worthpoint.com/worthopedia/antique-1890-1900-edison-patents-250v-47593408
Only the socket is an Edison patent !! The wiring is modern !! I am not a member of Worthpoint but you can use the free trial membership if you want to know what it sold for,,if it sold !! Look under the lamp base for a foundry mark to know who made the lamp !!
The socket for $25 back in 2012 – not exactly an attic treasure find I was hoping for. I wonder if the bulb is original…
Thanks for the help!