Signature: Cast in the interior of the vessel are two characters " " ya yi (?). Such an inscription on Shang bronzes usually refers to the name, clan or title of the ancestor in whose honor the sacrificial vessel is cast. (From purchase report)
New York. The Metropolitan Museum of Art. "Graceful Gestures: A Decade of Collecting Japanese Art," September 29, 2001–March 10, 2002.
New York. The Metropolitan Museum of Art. "Arts of Ancient China," 2005.