It could be the old collection of Mr. And Mrs. Clarence.: hetian jade longnu cup242 grams of diameter of 9.4 CM, 3.9 CM wideThis device to hetian jade precision cut, jade-like stone embellish is exquisite, excellent degree of oil moisten, local with sugar, exposure, deep belly, brick carving drum nails, outer wall high-relief longnu etc, vivid and refined, the overall unaware tiancheng, grinding refined, simple and beautiful.