Of large rectangular form, surmounted by a pair of recumbent dragons, each powerfully carved with eyes bulging and nostrils, the mouth slightly opened to reveal its tongue, with two long horns extending back over its head along a combed mane with finely incised details, the stone of white celadon tone with veins of russet inclusions, the seal face deeply carved with six character. Qing Dynasty period. Please refer to a similar imperial celadon jade 'double-dragon' seal, sold in Sotheby's New York on September 13, 2016, Lot 185. Provenance: Private collection, Los Angeles