🔎 UNIDENTIFIED What could it be to

[Nathan W]

rock hill is about an hour away from where I found this. This was at the old mill site. Not sure if it was something promotional or what.

 

[pepperj]

rock hill is about an hour away from where I found this. This was at the old mill site. Not sure if it was something promotional or what.

Not sure if it's a cap off a bottle, seal, or a head off a bolt/pin. Cool recovery though.

 

[Nathan W]

Not sure if it's a cap off a bottle, seal, or a head off a bolt/pin. Cool recovery though.

Maybe if I can get the rust off the back it will reveal more of what it could be. I swear I got an overall button before that size.

 

[Blackfoot58]

Looks like a riveted bib button to me.