CH463066 Square Tianhuang seal (stone) by Chinese School; height: 4.8 cm; Private Collection; (add.info.: Kangxi, carved in shallow relief on the top facing side with large and smaller stylised archaistic dragons in between a cartouche framing two characters; Shangjun, in seal script reserved on a leiwen ground decorated around the top with a continuous key-fret band; yuxin wukui (with a clear conscience)); Photo 穢 Christie\'s Images; Chinese, out of copyright.