Headdress of a Magistrate Judge called "Mortier"

Flat headdress of a magistrate judge called "Mortier" in fine black cloth, composed of a top band with black velvet bourdalou, two parts separated by a finely embroidered frieze. Our "Third Republic" example dates from the 1930s, maker's mark "GA". Good general condition. Diameter 19 cm, height 10.5 cm. I