Vacheron Constantin Traditionnelle tourbillon retrograde date openface

Vacheron Constantin's Traditionnelle tourbillon retrograde date openface, reference 6010T/000R-B638, measures 41 mm in rose gold. The case stands 11.07 mm thick and carries the Hallmark of Geneva. A sapphire crystal covers the openface dial, itself built in three parts with a hand-guilloché slate grey segment and a gold tourbillon seconds ring. The self-winding calibre 2162 R31 drives the watch and runs for 72 hours on a full wind, visible through a sapphire caseback. Complications include the tourbillon with small seconds on its carriage and a retrograde hand-type date. The dial also shows a railway minute track and applied gold hour markers. Grey alligator leather closes on a folding clasp in rose gold, and the case keeps its 30 metre water resistance rating.