Patek Philippe's Retrograde Perpetual Calendars: A Collector's Guide to References 5050, 5059, and 5496

The Patek Philippe Reference 5217 is a highly complicated timepiece, distinguished within the brand's perpetual calendar offerings by its inclusion of a minute repeater and a tourbillon. This reference belongs to a select group of Patek Philippe watches that combine multiple grand complications, placing it at the pinnacle of horological achievement and technical complexity. It represents the brand's mastery in integrating intricate mechanisms while maintaining a refined aesthetic. The 5217 is not a 'simple' retrograde perpetual calendar, but rather a demonstration of advanced watchmaking.

This reference features a case crafted from precious metal, housing a sophisticated manual-winding movement that integrates the perpetual calendar with retrograde date, minute repeater, and tourbillon functions. The crystal is typically sapphire, allowing for a clear view of the dial and, in some configurations, the movement through an exhibition case back. The construction emphasizes both acoustic performance for the minute repeater and precision timekeeping, characteristic of Patek Philippe's grand complications.

For collectors, the Reference 5217 is a significant piece due to its rare combination of complications. It appeals to those who seek the highest level of horological artistry and technical innovation from Patek Philippe. Its position alongside references like the 5013, 5016, 5213, and 5316 underscores its status as a grand complication, making it a highly sought-after model for serious enthusiasts and connoisseurs of haute horlogerie.

The Patek Philippe Reference 5160 represents the brand's Retrograde Perpetual Calendar model in 18k white gold. Produced from 2006 to 2011, this reference combines perpetual calendar complications with retrograde displays in a precious metal case. The 5160 was offered exclusively in white gold during its production run.

The watch features a 38mm case crafted from 18k white gold with a polished bezel and sapphire crystal. Water resistance is rated to 30 meters. The timepiece is powered by the automatic Caliber 324 S Q, providing 45 hours of power reserve. The watch is fitted with a leather strap.

This reference appeals to collectors seeking a complicated Patek Philippe timepiece with both perpetual calendar and retrograde functions. The white gold case material and relatively compact 38mm diameter make it suitable for formal wear. The five-year production window from 2006 to 2011 establishes clear parameters for collectors tracking this specific reference within Patek Philippe's contemporary complicated watch offerings.

The Patek Philippe Reference 5213 is a highly complex grand complication timepiece, distinguished by its combination of a minute repeater, a tourbillon, and a perpetual calendar with a retrograde date. This reference is part of a select group of Patek Philippe watches that integrate multiple high complications, setting it apart from simpler perpetual calendar models. Its design prioritizes the intricate display of time and calendar functions, appealing to collectors who value mechanical ingenuity and traditional horological artistry.

This reference features a platinum case, typically measuring 40.6 mm in diameter. It houses the self-winding caliber R TO 27 PS QR, a movement renowned for its minute repeating mechanism, one-minute tourbillon, and perpetual calendar with retrograde date, day, month, leap year, and moon phases. The movement operates at a frequency of 21,600 vibrations per hour (3 Hz) and offers a power reserve of approximately 38 to 48 hours. The watch is fitted with a sapphire crystal on both the front and the display back, allowing for observation of the intricate movement.

As a grand complication, the 5213 holds significant appeal for serious collectors of Patek Philippe. Its inclusion of a minute repeater and tourbillon alongside a perpetual calendar places it in a category of rare and technically sophisticated timepieces. The reference represents a pinnacle of Patek Philippe's watchmaking capabilities, often produced in limited numbers and highly sought after for its technical complexity and refined execution.

The Patek Philippe Reference 5216 is a grand complication timepiece, distinguished by its combination of a minute repeater, a tourbillon, and a retrograde perpetual calendar. This reference represents a significant achievement in horological complexity, integrating multiple high-end complications into a single watch. It stands apart from simpler perpetual calendar models by virtue of its additional acoustic and precision-enhancing mechanisms, positioning it at the apex of Patek Philippe's complicated watch offerings. The 5216 is a successor to earlier grand complication models, continuing a tradition of combining multiple functions.

This reference typically features a case crafted from precious metals, housing a highly intricate manual-winding movement. The integration of a minute repeater, a tourbillon, and a retrograde perpetual calendar necessitates a sophisticated caliber, designed for both precision and the harmonious operation of its various functions. The watch is fitted with a sapphire crystal, allowing for a clear view of the dial and, in some configurations, the movement through a display back. The power reserve is engineered to support the complex array of complications.

For collectors, the Reference 5216 holds considerable appeal due to its comprehensive suite of complications. It is sought after by those who appreciate the highest levels of traditional watchmaking artistry and technical execution. The combination of a minute repeater for on-demand chiming, a tourbillon for enhanced timekeeping accuracy, and a retrograde perpetual calendar for calendar display makes it a notable piece within the grand complication category. Its limited production and intricate nature contribute to its desirability among serious horology enthusiasts.

The Patek Philippe Calatrava reference 5496 is a perpetual calendar model featuring a retrograde date display. This reference is distinguished by its specific complication and material configuration within the Calatrava line.

The watch features a 39.5 mm platinum case with an approximate thickness of 11.2 mm. It is equipped with two case backs and a platinum deployant clasp. The dial includes rose gold appliqués for raised numeral date markers and other raised gold markers, along with a sweep seconds hand.

This reference appeals to collectors seeking a Patek Philippe perpetual calendar with a retrograde function in platinum. Its specific design elements and complications position it as a distinct offering within the broader Calatrava collection.