50s Francisco Rivera Taxco Sterling Silver Abalone & Onyx Flower Brooch Eagle 3

Beautiful six-petal flower brooch by noted Taxco silversmith Francisco Rivera ("FCO" hallmark, Eagle 3 assay). Hand-crafted in sterling silver with alternating abalone shell and black inlay, showing vibrant iridescent blues, greens, and purples. Stamped on reverse: STERLING 925 / FCO / TAXCO MEXICO / Eagle 3. Secure rollover clasp in working order Size: 1.5 inches Weight: 1oz Condition: Very good vintage condition with light surface wear and natural patina. Abalone inlay intact, clasp functions properly with loop for use as necklace.