Antique Silver Dancing Lady Brooch

This is a fantastic piece! One of the coolest I have come across. It’s hard to date this piece but it’s at least 100 years old based off the trombone clasp. Look at the details on her dress to the shoes and the fan she’s holding. She even has facial details. It’s some kind of silver may be less than sterling possibly 900 or 800. Appx 2” tall, just fantastic.