Vintage Enamel Swordfish or Marlin Brooch

This vintage figural swordfish or marlin brooch is simply amazing! Enameled in light green with dark green accents, the fish has a white stripe down his body accented with a bright yellow stripe. His eye is a golden rhinestone. He has clear rhinestones on his "sword" and what I am calling front fins. The rhinestones have yellowed over time, and are all original. The design of this piece is simply amazing! The plating on the pot metal back is in great condition, with one area of wear by the back fins I have shown in a picture. The brooch is quite large, measuring 2 3/4" by 3 1/4". Circa 1930’s-1940’s . The brooch is unsigned.