A very fine imperial white jade 'Zi qiang bu xi' seal. Qing dynasty, Qianlong period. Photo: Courtesy Sotheby's of square form, surmounted by a superbly carved pair of addorsed dragons, each exceptionally well carved with bulging eyes and flaring nostrils...

An exceptional imperial white jade "Quanlong yubi" seal. The seal, Qing dynasty, Kangxi period. The seal face recarved during the Qianlong reign. of extremely large square form, surmounted by an exceptionally well carved pair of addorsed dragons, each...