Steamy hot day. I still had to get my MD fix for the day. Lots of nails, wire and rusty tin. A couple of broken hinges and the item in photo. I’m purely guessing that it had wood or harness leather sandwiched between it at one time. Thanks
You nailed it IMO. Thanks for showing the reference sheet. I’m learning a lot about harnesses.👍🏼Probably a rope trace clip...as seen here.View attachment 2087317