QIANLONG MARK AND PROBABLY OF THE PERIOD The face carved with a sampan beneath a tree, with brown inclusions to the stone, the reverse engraved with a poem and a seal, which reads gu xi tian zi, 3.5cm. Provenance: from the collection of Professor R W Jackson. The poem reads: Yu e ceng jing pi su gong, Cheng tu jiao jiao jian yong Zhong. Fei liu yang tiao yi bu jin, Yu guo shi qiao yuan geng qiong. 清乾隆(可能) 黃玉雕御題詩扳指 銘文:玉厄曾經闢俗功,成圖佼佼見庸中。飛流仰眺意不盡,欲過石橋源更窮。乾隆癸卯。 鈐印:古稀天子 來源:R W Jackson博士收藏