Part of a clasp?

[TRcollector]

Any ideas what this is? This piece is about the size of a quarter and partial maker marked on the underside SP. I think it’s brass.

 

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[TRcollector]

I am having issues adding photos. I haven’t had issues before.

Just got it to work!

 

[PetesPockets55]

Interesting but it looks like it has rust and corrosion on the surface, so I'm thinking it's made of iron.

 

[TRcollector]

True... could be zinc.

 

[ANTIQUARIAN]

It's either made of zinc or spelter, this is why it looks to be disintegrating as we speak.

"Spelter is a zinc—lead alloy that ages to resemble bronze but is softer and has a lower melting point.
The name can also refer to a copper—zinc alloy used for brazing, or to pure zinc."

No idea what it is, but based on the style I'd say it's 'fashion related' and dates to the 1920s.
Dave

 

[DCMatt]

Looks like "pot metal" to me. If I had to guess I'd say it's part of a cap gun.