Here we celebrate those watches at the most complicated, artisanal, expensive and downright nutty end of the timekeeping pool – some of which take years to make.More
About as futuristic-looking as minute repeater timepieces get, Audemars Piguet's Concept Supersonnerie (released last year) would give even the most mellifluous chiming pocket watches a run for their money in the sound stakes. With a titanium case (designed specifically to minimize sound absorption) and a tourbillon thrown in for good measure, this is perhaps Audemars Piguet's most impressive release in recent years.
$597,400 (£466,868), audemarspiguet.com
Commissioned for Marie-Antoinette by a secret admirer in 1783, the No.1160 was the most complicated watch ever created at the time (it wasn't finished until 1827 - some 34 years after her death). Now, the timepiece has been immaculately replicated. Comprising 823 parts, there's a display showing the difference between civil and solar time, in addition to a chronograph, a power reserve indicator and a bimetallic thermometer.
The timepiece is not for sale but was estimated to be worth USD 30 million in 2013, breguet.com
Unveiled at this year's Baselworld watch fair, this new take on Cartier's Rotonde model houses the most advanced examples of the marque' watchmaking prowess. Featuring an Astroregulator, a minute repeater and an astrotroubillon, this hefty 45mm timepiece is limited to just 30 pieces.