Antique Art Deco 1920's Gold Filled Conch Shell Cameo Pin Pendant

Antique Art Deco 1920's gold filled conch shell cameo pin pendant. Bail for chain to wear as a necklace flips up and down, obscuring it from view when wanting to where it as a pin. C- clasp. Female profile turned the right. Low bun hairstyle reflective of the time. Twisted gold border of the cameo. Dent on left side of cameo (see second to last photo) and slight crack on the back (see third to last photo). 1/20 - 12k GF mark on the back on the bottom (see last photo). Some scratches and aging can be see, refer to photos. Length: 1 inch approx Width: .8 inches approx Weight: 3.93g