Qianlong's seal up for sale

A white jade seal of the Emperor Qianlong in the QIng Dynasty was presented recently in Hong Kong in the run-up to the Sotheby's auction scheduled on October 8. The color and texture of the jade is considered the top quality of its kind. The 12.5 sqcm seal is the largest one among all the seals by Qianlong. Its estimated auction price is HK$50m.