One of the rarest vase ever made from a song Period 12 Th Century is the one. Fantastic Song Dynasty Green Crackle Gu Vase 12Th Circa with five usuel Song Marks. Comes from an important private Chinese collector from Hong Kong . H: 6.75 inches D: 5 inches . Real museum item . TAKE A LOOK ON THE FOLLOWING SOTHEBY'S LINK.http://www.sothebys.com/en/auctions/ecatalogue/2014/fine-chinese-ceramics-works-art-l14211/lot.7.html