Unique artwork eighteenth century china

I have put my hands on the sale of this piece, a work of art of the eighteenth century to its present owner could not give me names and characteristics, just the piece that I photographed.

I would like to know more about it because I have commissioned their sale and history, but not worth me to put a price. Eighteenth century and its owner smuggled out of China to pay for her $ 120.000, its current owner acquired it in early 2000 for $ 50.000.

Any information on this Directive provides for more images.