🔎 UNIDENTIFIED Pendant?

[Groundhogg]

I found this while detecting an old farm house. It's about 1 1/8 inch in diameter and appears to be made of tin(?). There are remnants of black paint on it and what used to be a simple wire pin on the back. There also appears to be a solder mark in the middle of the front. All opinions welcome. Thanks for looking

 

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[Retired Sarge]

Brooch....Could be the solder mark on the front is from some sort of long lost embellishment. Like a non-precious stone etc.