The Vacheron Constantin Les Cabinotiers Celestia Astronomical Grand Complication 3600 boasts 23 complications within its works, making it the most complicated Constantin wristwatch, but not the most complicated Constantin timepiece overall – for instance, last year the brand unveiled its most complicated pocket watch, the the 57260, which has 57. Vacheron Constantin’s artistic director Christian Selmoni had this to say about the Celestia’s genesis, and how the project was inspired by how the grand masters of watchmaking worked in days gone by: While the old masters may be dead and gone, there’s still a fair amount of mystery surrounding the $1 million Celestia, including who actually designed it. Vacheron Constantin isn’t releasing the man’s name, instead referring to him publicly as “MW,” who has a passion for astronomy as well as bespoke watchmaking that can be seen in the watch’s functions. The Celestia is the end result of a total of five years of work, three devoted to the concept stage, and two to physically create the watch. One of its more dazzling functions is its running calculation of apparent solar time and mean solar time, values which can differ by as much as 15 minutes at different points in the year. The Celestia is a one of a kind piece and has already been sold, but Vacheron Constantin will use it as a base for future custom watches, provided that every future design is also unique.