✅ SOLVED Found near harness leather finds.

[Blackfoot58]

This was found very close to a spot that has turned up harness parts: buckles, rings and rivets, but this may be something else. I can’t decide if it is a hasp, buckle, latch, etc. It moves freely and is ferrous metal.

 

[ticndig]

collar fastener

 

[Blackfoot58]

Thank you ticndig! A new one on me. I always appreciate the chance to learn. 👍🏼