During his tenure as CEO of Harry Winston Timepieces, Maximilian Büsser recognized the timing as ripe for a renaissance of independent watchmaking, conceiving the Opus project. In 2002, for the second collaboration, Büsser conscripted Antoine Preziuso, the Geneva-based master renowned for his bold sculptural tourbillons. The result, Opus 2, embodies both technical and aesthetic brilliance.

Crafted in platinum, beneath its crystal lies a mesmerizing landscape — a skeletonized one-minute tourbillon paired with a perpetual calendar displayed through a hinged caseback. A hinged caseback reveals the retrograde perpetual calendar, elegantly displaying the day, date, and leap year.

Only 23 examples were made: 11 Tourbillon with Perpetual Calendar (the present watch, number 10), 11 Tourbillon with 110-hour power reserve, and one diamond-set unique piece.

Originally delivered on a crocodile strap, the current owner sourced an original platinum Harry Winston bracelet — a rarity that harmonizes perfectly with the case. It is offered in excellent condition, complete with its original accessories.