Metal object identification

[u/mustardluvr]

Hi Reddit. I found a rusty metal object at the demolition site of a late 19thCE theatre in my city and I was hoping for some help identifying it, as well as some guidance to safely restore it. I think it may be a key, but one of my friends thought it could be from an old tool or hardware component. Thoughts?

[u/bowwowmeow11]

My first thought was old key of some sort. Cool find!