You’d Never Guess What’s Hidden Inside This $20 Gold Coin

What appears to be an ordinary $20 Double Eagle gold coin is actually one of the rarest and most ingenious creations ever produced by Patek Philippe.

Produced in 1925, this extraordinary coin watch conceals an ultra-thin mechanical watch hidden inside a genuine gold coin. A discreet latch built into the coin’s edge activates a spring-loaded cover, revealing the miniature timepiece within. Even more remarkably, this watch once belonged to Henry Graves Jr., the legendary collector who commissioned the Patek Philippe Supercomplication — the most complicated watch in the world for over 50 years.