Omega, the Official Timekeeper of the Olympic Games, is auctioning off a one-of-a-kind limited edition watch set in a bespoke black walnut trunk (above) that's expected to fetch up to $1.5 million. Known as the Unique No. 8 Collection and based on the Chinese concept of "lucky number 8", the rare and unique item is being offered at Sotheby's in Hong Kong today, with proceeds going to The Chinese Athletes Educational Foundation (CAEF).

The set is comprised of the eighth numbered piece of each of the 32 Limited Edition wristwatches in the Omega Beijing Olympic Collection, plus three Olympic Split Seconds Chronograph 1932 pocket watches, also numbered 008 in their limited editions of 100 pieces. The watches, including a set of split seconds open-faced chronographs in 18k yellow, white and red gold, are presented in a striking black walnut pagoda-style eight-drawer tower with intricate carving and a lacquered finish, paying homage to traditional Chinese architecture. Truly the ultimate Olympic collector's item.