It could be the old collection of Mr. And Mrs. Burton.Tank, hetian jade proseSpecification: high 9.2 cm diameter 5.5 cm weighs 256 gExcellent hetian jade material for the material, the quality of the jade is exquisite, taste good, body intaglio poetry, writing norm, exquisite knife work, covering act the role of flower pattern, layout rigorous, oily is wonderful, wrapped slurry is mellow, four ya.