A rare and large bronze 'Six Mountain' mirror, late; Warring States period, 4th-3rd century BC; the mirror is crisply cast with a ribbed loop surrounded by a circular border and five feathers enclosed within the six-pointed star created by the connected inner edges of the six shan, 'Mountain', characters, all reserved on a ground of swirl pattern, with thin upward curved rim. The bronze has a silvery grey, lacquer-like patina with some malachite and azurite encrustations. With a cloth box, 20 cm. Diameter