Potential collectors Berg spent some time in China around 1907.The late: hetian jade guan YinSize: 12.3 cm wide and 7.7 x 3.9 cm weighs 417.3 g.Summary: the quality of the jade is exquisite, dense, glossy fat slippery, carve one's face is clear, full cheeks, a d at jade net bottle, YiWen fold is natural, vivid, leather wrapped slurry is thick, the collection market.