Clear Rhinestone Vintage Brooch Twist Pin Gold Tone pat number 2066969. 1\" For Sale

This vintage domed knot brooch features a distinct basket-weave style design crafted from intertwined gold-tone bands. Many of the open bands are channel-set or pavé-set with clear crystal rhinestones, culminating in a larger prong-set chaton rhinestone directly at its center.This specific patent number, US Patent 2,066,969, was granted on January 5, 1937, to E. A. Phinney for a revolutionary jewelry mechanism. Instead of being tied to a single specific jewelry brand or shape, it was a utility patent for a standardized, high-quality safety catch mechanism for pins and brooches.measuring 1\"