Imperial seal set to sell for a royal price

Sotheby's director for China and Southeast Asia Nicholas Chow holds an imperial seal that belonged to emperor Qianlong from the Qing dynasty. The soapstone seal, bearing a carving of the mythical imperial lion, encapsulated the emperor's authority. It was used on a number of calligraphy pieces belonging to the emperor. The seal will be auctioned on April 25 at the Island Shangri-La Hotel. It is expected to fetch between $7 million and $9 million.