What sold for a few hundred thousand dollars in 2005 and recently sold for $1.7 million in a Hong Kong auction? A Patek Phillipe watch of course. Quite a good investment!

The watch, made by a company that has been in business for more than 150 years, is the Sky Moon Tourbillon. Not only is it very rare, but very complex as well. The watch actually has two faces. The front is opaline white with gold hour indicators. There is a perpetual calendar, retrograde date, equation of time, time with hours and minutes and the moon phase. The other side of the watch has a celestial view.