Vacheron Constantin Patrimony Perpetual Calendar Ultra Thin 41mm 43175/000R-B519

Vacheron Constantin Patrimony Perpetual Calendar Ultra-Thin reference 43175/000R-B519 is a masterpiece of classical horology, combining a slim profile with complex calendar mechanics. Housed in a polished 41mm case made from 18-karat 5N pink gold, the timepiece measures a remarkably thin 8.9mm in total height. Its midnight blue dial features a sunburst satin-finishing accented by applied 18K pink gold hour markers, matching hands, and a circular "pearl" dot minute track along the curved outer edge. The beautifully balanced dial cleanly lays out a comprehensive perpetual calendar complication including a 48-month display with leap year indication at 12 o’clock, the date at 3 o'clock, the day of the week at 9 o'clock, and an 18K gold moon phase display with a champlevé enamel sky at the 6 o'clock position. This elegant dress watch provides roughly 40 hours of power reserve and is elegantly completed by a matching dark blue leather strap secured by an 18K pink gold folding clasp.