Warring States (475-221 BCE) Each crisply cast in low relief with multi-ridged eyebrows centered by an unusual chequered-pattern cylinder below two curling horns, the beak curled under to support the solid ring, the side edges of the masks with tightly-scrolled tufts and crests, the reverse with a thick projecting pin from the center of the back for mounting, all under a soft silvery-green patina. 3 1/8in (7.8cm) high, the Taotie, 5in (12.6cm) high overall (2).