I found this sign in my neighbors building, and they didn't want it so I took it home. I'm trying to find some info on it, but can't find another one like it anywhere online.
It's a convex design, I'm pretty sure it's porcelain, and the numbers on the bottom are RC-626 and MCA-1560. It has 8 holes around the border. I don't really know anything else about it. Can anybody give me some info on it, and possibly what it's worth?
