Head of a Guardian Figure (dvarapala), Tang dynasty, 618-907, c. 735, China, Shanxi province, Tianlongshan, Cave 17. Light gray stone with traces of gesso and pigment, H. 32 x W. 18.3 x D. 18.6 cm (12 5/8 x 7 3/16 x 7 5/16 in.). Harvard Art Museums/Arthur M. Sackler Museum, Bequest of Grenville L. Winthrop, [1943.53.41](https://hvrd.art/o/204427). Model courtesy of [Tianlongshan Caves Project](https://tls.uchicago.edu/), CAEA, University of Chicago.