This is an antique or vintage costume jewelry brooch featuring an oxidized brass-toned triple-disc base with dangling charms including black bead accents and coin-like medallions.

• Design Elements: A horizontal safety pin back attached to three textured, conjoined circular stampings, suspending dangles with round black beads and decorative metal coins.

• Style and Era: Typically reflects a bohemian, Victorian revival, or artisan-crafted aesthetic, often utilizing repurposed elements like vintage-style buttons or coins. 

• The image shows a 1 Pitis coin from the Sultanate of Palembang (Indonesia), cast in tin with a central round hole and Arabic script, dating from approximately 1658 to 1710 and  a Daoguang Tongbao style cash coin, styled as a pendant or charm from the Qing Dynasty era of China

• As Fashion/Costume Jewelry: Similar multi-charm assemblage brooches typically retail for $15 to $35 on vintage resale platforms like eBay.