The Vacheron Constantin chronograph ref 47100 is an ultra-rare and highly sought-after watch. It is a manual winding chronograph that features the legendary movement 1140S based on Lemania caliber 2310, which is considered one of the best chronograph movements of all time. It is fully engraved and gilt-finished which adds to the watch's aesthetic appeal. The dial of the watch is skeletonized, which allows the watch lovers to see and enjoy the beauty, finishing and inner workings of the movement. The dial also features baton numerals on the outer chapter ring, and two sub-dials indicating small seconds and 30 minutes chronograph register on white chapter rings. The case of the watch is circular, with a diameter of 38mm and made of 18k yellow gold. The watch comes on a leather strap with a Vacheron Constantin buckle.