Gyrotourbillon I

The Gyrotourbillon I is one of the most expensive Jaeger-LeCoultre watches, with just 20 created each year. This clock has 679 pieces and is extremely complicated. The tourbillon is one of the most striking, as it eliminates the influence of gravity on the movement for the most precise timekeeping.

Just by glancing at the watch, you can tell it's an extremely intricate piece of Haute Horlogerie, with most of the mechanism exposed on the dial side. The most visible is the spherical Gyrotourbillon, JLC's seventh multi-axis tourbillon and one with a decreased size that allows it to share a room with other complications while remaining in a highly wearable 43mm x 14.08mm case size. Then there are the minute repeater hammers and the patented crystal gongs. But this isn't any ordinary minute repeater. It's one that's been programmed with four sets of hammers and gongs to play the Westminster carillon, the well-known song made famous by Big Ben's clocktower. Though relatively few are manufactured, this sculpture does occasionally make its way to auction houses.

Price: approximately $400,000.