Double-profile masks from Chinese ancient Shang bronzes.
"The Tao Tieh is a motif commonly found on ritual bronze vessels from the Shang and Zhou Dynasty. The design typically consists of a zoomorphic mask, described as being frontal, bilaterally symmetrical, with a pair of raised eyes and typically no lower jaw area. Some argue that the design can be traced back to Neolithic jades of the ancient Yangtze River Liangzhu culture."
