I know someone out there knows what these are and what they are for. Found on old Illinois farmland where stuff has been found dating to the early 1800s. The one I think may be light related. It has the 4 holes to attach to a wall? Could be hollow but the low end is crushed. The other is a closed hook looking thing. The construction is very interesting. It is brass and has a screw on the bottom. There is a pin through the bottom attached to a thin metal strip on the inside. It looks like it was made in 2 pieces. I don't think it could ever move. Any guesses?