At first glance, I had assumed that it was an old phone jack, but when I took it out, it appeared to have been connected as some sort of electrical outlet. It’s hard to read what it says, but it appears to say “woodwin” “50V 10A.” There could have been a number before the 50, but the bakelite chipped off so it’s hard to tell.

Any ideas what this was used for? The room it was in is a bedroom which used to be a back porch off of the kitchen. Now it’s part of the new master bedroom. I’m really stumped because there are 4 prong openings, but it only had 2 wires connected to it. Let me know if you have any ideas – humor is always welcome too.