PFR142697 \'Water Pool in Middle Cavern Treasure\' inkstone, with a cylindrical ink \'pool\', low relief drifting clouds and the sealmarks of Kao Shih-ch\'i (1645-1703) and Chu I-tsun (1629-1709) probably Sung or Ming to Ch\'ing dynasty, 10th-17th century with c.1680 inscription (carved tuan stone) (for reverse see 142698 and underwater see 142700) by Chinese School; 15.9x18.4 cm; Private Collection; 穢 Paul Freeman; Chinese, out of copyright.