loop

Hi! I am from west central Indiana and found this large iron piece about a foot deep in a gravelly creek bed. The site is supposed to be where US soldiers camped in the early 1800s. I’ve found evidence of camped soldiers nearby from 1811 and onward into the civil war era (buttons, harmonica...

This is a small brass with a tiny little loop attached to it. Any help id'ing this would be greatly appreciated. Thank you for looking.