The high value of the ‘Twelve Beauties’ series in the form of a Souvenir Sheet on a First Day Cover. This large-sized stamp features ‘Baoyu’ and ‘Daiyu’ from ‘The Dream of Red Mansions’ by Cao Xueqin. The catalogue value of the Souvenir Sheet itself would be $140. used. Since the postmark does not touch the actual stamp, consider the value in mint would be $290. Our Price: $140.