Beautiful black and gold enamelled Chanel brooch Golden

Superb Chanel brooch signed by the jeweler Arthus Bertrand Paris.
This lapel pin was intended to be worn by the staff of Maison Chanel (shops and stands).
Approximate dimensions: 5,3 cm x 1,3 cm
CHANEL inscribed in golden letters on a black lacquered background.
Superb worn on a jacket, a coat, a dress or even a beanie, a hat, a scarf …