If you’re going to spend $31 million on a timepiece, then it’s a bonus to know you’re getting two for the price of one. This timepiece has two dials, one on the front, and one on the back. 

The most expensive Patek watch ever sold It was sold at Christie's in 2019, the Grandmaster Chime boasts 20 different complications, including five different chiming modes (hence the name), as well as an acoustic alarm and date repeater. Both dials are blue opaline with gold-applied numerals and 18K solid gold dial plates. The case is white gold, and the strap is made of navy blue alligator leather.