Chinese. The disc carveed with repeated angular scroll pattern, the stone is of opaque russet brown tone.
顏色呈鮮豔紅潤,正反面滿飾紋飾,排列整齊規矩,緊密有序。 來源: 俄亥俄州前 NASA 科學家私人收藏Provenance: Property from an ex-NASA scientist's collection in Ohio