9. Patek Philippe, 1928 Single-Button Chronograph – $3.6 Million
Founded in 1851, Patek Philippe & Co. was started when Polish watchmaker Antoni Patek teamed up with French watchmaker Adrien Philippe. Since then, the company has been known for producing time pieces of the highest quality. Looking at this 1928 watch, you may wonder why such a ‘normal’ looking watch can fetch such a high price. First, it’s a Patek Philippe which automatically ensures its build quality. Second, this particular cushion-shaped watch is the only surviving white gold version known to exist from Patek Philippe. Additionally, it has Breguet numerals and vertically positioned registers. Records show the watch was created especially for an anonymous buyer just one year before the Great Depression struck.