Vintage 10 inch duan instone, 朝天坑. Brought from Japan, Seller described about 1980’. Please confirm by yourself. There is a sticker 朝天坑. Check the picture for a small dent, but no crack. Great qualities stone, Rare to find. 端砚朝天坑,从日本购入石头非常好,下墨飞快。因为磨墨中间忘记拿走墨条,干了再拿的时候沾下一块砚面,说明砚台的材料非常软糯,是石头质量很好的老端砚,因为砚台比较大,小坑不影响使用,完全没有裂纹。