Sterling Silver 925 Baltic Amber Treble Clef Brooch Pin 2"

A sterling silver 925 Baltic Amber Treble Clef brooch in good condition. Has a stamp on the stick that is hard to read and acid testing confirms a sterling silver 925 purity. Measures 2" x 0.65" with the gem measuring 0.45" in diameter. The catch mechanism is in good working order. Thank you!