In september 2015 Vacheron Constantin unveiled the most complicated watch ever seen. A pocketwatch with 57 complications known as ref 57260. The development of the superpocketwatch took 8 years for 3 superwatchmakers. Now Vacheron Constantin have let the same three watchmakers come up with a series of new watches based on the complications from ref 57260. In this first watch, Montre Pièce Unique Calibre 1990, they ended up using a double retrograde system and an armillary tourbillon.
The Caliber 1990 have both retrograde hours and minutes with instant flyback.
The tourbillon system is based on a 1880s astronomical watch with an armillary sphere. The balance spring have a spherical design that is making the two axis rotation possible. That is as far as I got before my head almost exploded. If you need more details, check out at Vacheron Constantin. Link below.
No matter how complicated in mechanics and theory, this watch is simply beautiful. In my opinion this watch represents a radical new direction for Vacheron Constantin. They usually tend to keep it classic and conservative. This is a push towards avant garde that I find fascinating and promising. I like it!
The watch is one of a kind with a 45.7 mm case in 18K white gold. 20 mm thick. The price is unknown, but it will cost you!
Read more about their watches at Vacheron Constantin.