Vacheron Constantin Traditionnelle tourbillon retrograde date openface

Vacheron Constantin's Traditionnelle tourbillon retrograde date openface, reference 6010T/000P-H055, has a platinum case measuring 41 mm across and 11.07 mm thick. The silver-toned openface dial is worked with a hand-guilloché Maltese cross pattern marking the manufacture's 270th anniversary, and it sits under a sapphire crystal. Small seconds appear on the tourbillon carriage, with a retrograde date display sharing the dial. The self-winding calibre 2162 R31/270 carries the Hallmark of Geneva and gives 72 hours of power reserve. This is a limited edition, and the sapphire caseback shows the finishing of the movement. A dark blue alligator leather strap closes on a folding clasp in platinum. Water resistance stands at 30 metres.