Patek Philippe Perpetual Calendar Split Seconds Chronograph, REF:5004A for Acier. From 2013

Extremely rare Patek Philippe Ref:5004A

In the modern world of horology, Patek Philippe is synonymous with innovation and fine artisanship. One watch that exemplifies everything about Patek Philippe is the reference 5004 - a wondrous epitome of Swiss horological prowess, technological mastery and breathtakingly beautiful design. In production between 1994 and 2009, the reference 5004 is one of the scarcest Patek Philippe models in the market, as only approximately 12 examples were created per year due to its technical difficulty. Production of the reference 5004 was halted in the midst of its 15-year run to allow the watchmakers to concentrate on a separate split-second movement. The reference 5004 embodies some of the most significant features in the history of horology, including perpetual calendar, split seconds chronograph, moon phases, as well as 24-hour and leap year indication.

To celebrate the retirement of this iconic model, Patek Philippe created the last fifty examples of the reference 5004 to be encased in stainless steel, as all preceding models were in gold or platinum. Wristwatches with perpetual calendar or chronograph movements encased in stainless steel are some the rarest timepieces in the world of watch collecting. Cased in stainless steel, the present reference 5004 is not only a rare work of art for the wrist, but also a highly complex timekeeping device. Adding an element of exclusivity, the reference 5004 in stainless steel was sold exclusively through the Geneva Salon, providing personalization customization for the brand’s most loyal clients.