"The ref. 2499 stands today in the pantheon of vintage horology."
The Ultimate Follow-up: A Look into the Patek Philippe Reference 2499
By Alex Veringa | Watch Specialist, KINSMEN
With only 349 estimated examples ever produced across 35 years, discover how the Patek Philippe Reference 2499 transformed a rare mechanical breakthrough into the undisputed holy grail of vintage collecting.
Introduction
When Patek Philippe introduced the ref. 1518 in 1941, the Genevan manufacture had successfully achieved the serialised production of a perpetual calendar chronograph wristwatch, a feat no other watchmaker could claim. We touched on this topic recently, which you will find here.
In 1950, almost a decade after the release of the ref. 1518, Patek Philippe unveiled the ref. 2499. Produced over a span of 35 years until 1985, the ref. 2499 stands today in the pantheon of vintage horology. While the 1518 proved that it was both possible and practical to produce a perpetual calendar chronograph wrist watch , the 2499 further refined its aesthetics, bringing with it a modernized case design. Estimates for the total production sits at just 349 examples, averaging fewer than 10 pieces per year.
The history that surrounds this reference, its timeless case design, iconic dial layout, along with the limited production numbers easily puts the ref. 2499 as one of the most sought after vintage timepieces among contemporary collectors.
The mid-twentieth century brought a dramatic shift in design aesthetics, as the delicate, restrained proportions of previous generations made way for pronounced stepped lugs and larger case dimensions. While the ref. 1518 measured a traditional 35mm in diameter, the ref. 2499 grew to 37.5mm. Though small by modern standards, it was considered a larger timepiece for its era, earning it an assertive presence that feels remarkably contemporary seven decades later.
The ref. 2499 represented Patek Philippe’s determination to refine every aspect of the perpetual calendar chronograph architecture. Over its 35-year lifespan, the ref. 2499 can be categorized into four distinct series, reflecting key transitions in casemaking techniques, dial printing methods, and other aesthetic nuances that we will discover. Ultimately, it carried forward the blueprint established by the ref. 1518 for Patek Philippe perpetual calendar chronographs, a design foundation that remains largely unchanged to this day.
Dial Craftsmanship: Stern Frères and Hard Enamel
Across all four series, dial production was entrusted to Geneva’s dial manufacturer, Stern Frères. Built on a silver base plate with a matte opaline finish, the dials feature an engraved tachymeter scale, seconds track, date, 30-minute register, and ‘Patek Philippe’ signature, all finished in raised, hard enamel. The moon phase disc was similarly enameled. This traditional technique persisted until circa. 1970, when manufacturing shifted to pad printing, phasing out hard enamel.
The Four Series
Over the course of its thirty-five-year manufacturing run, horological scholarship and collectors have systematically categorized the production history of the ref. 2499 into four distinct series. This structured classification relies on subtle, evolving design characteristics and technical iterations across its lifespan, most notable in the style of pusher chosen, hour marker selections, hand profiles, dial manufacturing techniques, and crystal materials.
First Series (circa. 1950 – 1960)
As the rarest and most traditional variant within the reference's history, the First Series functions as an aesthetic bridge connecting the design language of the preceding ref. 1518 to the newly established ref. 2499. Mirroring the fundamental blueprint of its legendary forerunner, timepieces belonging to this initial production feature classic rectangular chronograph pushers, applied Arabic hour markers, and elegant leaf hands, standing as the purest stylistic transition between these two generations of perpetual calendar chronographs.
Second Series (circa. 1953 – 1960)
The defining characteristic of the Second Series is the transition to round chronograph pushers, which replaces the rectangular pushers seen on the first series. This aesthetic shift establishes a lasting silhouette that Patek Philippe maintained through to the end of the references production run. Furthermore, this period introduced greater variation in dial configurations, featuring both traditional Arabic numerals and sleek baton hour markers, paired with either leaf hands or faceted dauphine hands.
Third Series (circa. 1958 – 1978)
The Third Series ushered in a distinctly more streamlined, clean, and minimal layout for the dial face. Most noticeably, we observe the omission of the tachymeter scale at the outer edge of the dial, creating a cleaner, more minimal aesthetic. Arabic numerals were also completely phased out during this series in favor of baton indices, though both leaf and dauphine hands remained. Crucially, this era also witnessed a major evolution in production techniques, starting from around 1970, when traditional hand engraved enamel dials were phased out in favor of modern printed dials.
Fourth Series (circa. 1978 – 1985)
The distinctions separating the Third and Fourth Series are more subtle and nuanced, representing the final refinement of the reference before its eventual retirement. Beginning with this series, Patek Philippe began equipping 2499's with durable sapphire crystals, replacing the acrylic crystals used throughout all previous series. The font size used to indicate the date was increased slightly, which reduced the surrounding space along the track and resulted in the omission of the "30" numeral indication along the outer minute track.
Production Volumes & Metal Breakdown
Over its 35 years in production, only 349 total examples of ref. 2499 were crafted. Although total production numbers surpasses that of the ref. 1518, the ref. 2499 was also in production for a much longer period. Ultimately Patek Philippe would only produce roughly 10 examples a year throughout its production.
| Case Material | Estimated Production Volume | Number Recorded (as of 2023) | Notes |
|---|---|---|---|
| Yellow Gold (18k) | Majority produced | 123 recorded | In similar fashion to its predecessor, a majority of known examples are cased in yellow gold. |
| Pink Gold (18k) | ~ 23 to 50 produced | 23 recorded | Pink gold examples are much harder to come by, with only a few pieces of these known across the first 3 series. |
| Platinum | ~ 2 produced | 2 recorded | Only 2 examples were made in platinum, more on these two pieces later. |
A Pair in Platinum
Among vintage Patek Philippe wristwatches, complicated mechanical timepieces cased in platinum exist in small numbers. Within this limited production, the platinum ref. 2499/100 occupies a distinct position, given that Patek Philippe manufactured only two examples in this metal. Patek Philippe retained one watch, featuring movement number 869'309, for display in its Geneva museum, leaving the remaining piece as the single platinum ref. 2499 (movement number 869'308) accessible to collectors.
This specific watch entered the secondary market when Patek Philippe consigned it to the Habsburg & Feldman / Antiquorum staged “The Art of Patek Philippe” auction during the 150th anniversary of the brand. Since that original sale, the timepiece has maintained a clear, unbroken chain of documented provenance through three sequential owners, the most notable being none other than English guitarist and singer-songwriter Eric Clapton, whose collection it remained in for some time before its transition to the next owner.
Records indicate that movement numbers for these two platinum watches follow directly after the last yellow gold example produced, establishing their position at the end of the production timeline. Because roughly half of all known platinum complicated vintage Patek Philippe watches reside in Patek’s museum today, the opportunity for private buyers to acquire a complicated platinum reference from this historical era remains extremely limited.
Snapshot of Eric Clapton's Perpetual Calendar Chronographs sold at Auction
Retailer Signatures
Given the immense exclusivity surrounding the ref. 2499, distinguished clients purchasing through prominent retailers were occasionally afforded the unique opportunity to acquire timepieces stamped with the retailer’s own signature. Of all such double-signed variants, the most frequently documented, though still extraordinarily scarce, are those bearing the signature of Tiffany & Co., of which approximately ten examples are known to exist. Additional distinguished retailers include Beyer Chronometrie, Cartier, Gübelin, Asprey, Serpico Y Laino, Gobbi Milano, Trucchi, and Howes. Timepieces bearing these alternative names were produced in far more restricted quantities. Crowned as the absolute pinnacle of rarity and desirability among these pieces are the already rare pink gold examples that additionally feature the Trucchi, Gobbi Milano, and Tiffany & Co. signatures set upon their dials.
Mechanical Architecture: The Caliber 13-130 Q
The ref. 2499 utilizes the same movement as its predecessor, the legendary Calibre 13-130 Q (Quantitème Perpétuel) "13" denoting its 13-ligne diameter of 29mm, and "Q" standing for Quantième, the French horological term for calendar. This movement was built upon a heavily modified 13-ligne 23 VZ Valjoux ebauche, which Patek Philippe re-engineered to its own exigent standards.
Known for their craft of complicated calendar mechanisms, Victorin Piguet provided the perpetual calendar modules that were made to be fitted onto the base calibre.
The resulting cal. 13-130 Q clearly proved to be a robust and mechanically reliable movement, evidenced by the fact that Patek never felt the need to develop an entirely new movement for the ref. 2499. Ultimately, this movement would serve as Patek's sole perpetual calendar chronograph caliber till 1985 when they made the transition to a Lemania-based movement in the CH 27-70 Q.
The Three Casemakers: Émile Vichet, Edouard Wenger and Ateliers Réunis S.A.
The case architecture of the ref. 2499 is celebrated for its stepped, downturned lugs and concave bezel. Throughout the reference’s 35-year run, Patek Philippe entrusted case production to two master casemakers, whose subtle structural differences provide a distinction between the early and subsequent series of the reference.
Émile Vichet (Key No. 9)
Émile Viche mainly produced cases for the First series of the ref. 2499, a rare few second series examples can also be found with Vichet cases.
Characteristics: Vichet produced slightly smaller cases, with a diameter of 36.2mm. Hallmark characteristics include a flatter caseback and claw like lugs that curve more aggressively towards the wrist.
Edouard Wenger (Key No. 1)
During production of the First series, Patek Philippe shifted primary case production for the ref. 2499 to Edouard Wenger.
Characteristics: Wenger cases were considerably larger, with a diameter of 37.8mm. The lugs here are more compact and less downturned. Wenger cases have a beautifully domed caseback.
Ateliers Réunis S.A. (Key No. 28)
Beginning around 1982, Patek Philippe would turn to Ateliers Réunis S.A., a case manufacturer they had acquired in 1975, for the production of the remainder of fourth series ref. 2499/100.
Characteristics: The differences between these cases and earlier, Wenger cases are less significant. The pushers are positioned slightly lower along the caseband and the crown is a little smaller. Case size remains the same at 37.8mm
Unique and Special Configurations
Among the 349 known examples of the ref. 2499, a select few were created with unique configurations that set them apart. It is precisely in these intricate details that captivate the hearts and command the attention of even the most seasoned collectors.
Market Sentiment and Legacy
Ultimately, the ref. 2499 stands among the most celebrated portion of Patek Philippe’s catalogue: the perpetual calendar chronographs. As the direct heir to the pioneering 1518, it added a beautiful touch of modernity that carried the complication forward for 35 years before Patek Philippe considered modernizing it further with the reveal of the ref. 3970. On the wrist, its execution remains flawless; even decades later, its 37.5mm profile hits the sweet spot for what most collectors consider ideal proportional balance.
The production of the 2499 also captures a critical historical transition in Genevan craftsmanship. In the reference's early years, Patek Philippe relied on elite independent artisans, starting with Émile Vichet, whose workshop closed permanently in the mid-1950s, and Edouard Wenger, who crafted the majority of 2499 cases before dissolving in the late 20th century. Because neither workshop survived into the modern era, a Vichet or Wenger case can never be produced again, making a vintage 2499 one of the few remaining physical gateways to owning their handiwork. Recognizing the fragility of relying on external workshops, Patek Philippe acquired Ateliers Réunis S.A. in 1975. By bringing Ateliers Réunis in-house to produce cases for the late 4th Series, Patek Philippe did not merely secure its supply chain, it rescued Geneva's casemaking trade from extinction, establishing the blueprint for the vertically integrated manufacture it is today.
Today, the 2499 is an apex asset class at auction, where extreme rarity, exceptional condition, and high provenance play hard into price action. This is most evident in the reference's top three auction results, which represent a direct cross-section of its history and caseworkers:
The Pink First Series: A 1st Series in rose gold featuring an Émile Vichet case, which achieved HK$80,370,000 (US$10,255,212) at Phillips in May 2026.
Retailed by Asprey: A 1st Series in yellow gold featuring a Wenger case with the London retailer's signature, which fetched CHF 3,915,000 (US$3,879,843) at Sotheby's in 2018.
Eric Clapton’s 2499: A 4th Series in platinum featuring an Ateliers Réunis case, one of only two known to exist, which realized CHF 3,635,000 (US$3,635,859) at Christie's in 2012.
Yet, the market's strength extends far beyond these mythical outliers. Even the more common yellow gold layouts are steadily increasing in value. The evolution of the reference, from the exceedingly scarce early series with square pushers to the more modern 4th series with sapphire crystals, gives collectors distinct options to pick from, though always in strictly limited appearances.
Bridging the classical mid-century origins of the 1518 with the modern horological architecture of the 3970, the ref. 2499 is the ultimate benchmark. Seven decades after its debut, it remains the inescapable yardstick by which every perpetual calendar chronograph is forever measured.
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