Late Shang/Early Western Zhou Dynasty, Ca. 12th-11th Century BC Cast in relief with taotie masks and leiwen, on three bird-shaped flattened profile legs, bas-relief cast zoomorphic pattern with a triage of conical-shaped motifs with circle nodule centre, linked with floral motifs with central nodule. some restoration. For futher reading see: Liu Yang, Ancient Ritual Bronzes from the Shanghai Museum, p.80-81. Shang Rituals Bronzes in the Arthur M Sackler collections.The item has undergone X-ray fluorescence analysis to confirm the metallurgical content suggesting its ancient origin and lack of modern trace elements. Size: L:255mm / W:195mm ; 1.6kg Provenance: East Anglian private collection; formerly acquired in the early 1990s in Hong Kong.