清代优质沉泥砚:A Finely Chinese Hardwood Covered Boxed Inkstone designed in the form of bamboo, the inkstone carved with chinese caligraphy. Wood box:L:16.5cm, W:13cm, 10cm, H:5.6cm. The Cheng-ni inkstone is an old traditional Chinses technology,which is one of the???Four Fa-mous Inkston???called,with Duan,She,Tao.