Circular bronze mirror caste in low and high relief, filled with finely executed mythical animals in low relief, Eastern Han Dynasty (25-220 AD), northern China. Size: 6.5" (17 cm) Diameter. The parallel lines are called a tooth bite pattern and the zig-zags along the outer circle, a??gearsa?? (translated from Chinese). Reference: Zhong Guo Gu Tong Jing Jing Shang Tu. Provenance: Lee and Vichai Chinalai collection.