🔎 UNIDENTIFIED Looks like a decorative brass item.

[IHC656]

Found were a church and school had been.
Judging by the back it was attached to something.

 

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[TreaShore]

Maybe old costume jewelry? Like an earring part missing the post where the solder was? Like a vintage clip on earring missing the screwback?

See example of silver earrings below.