
Estimé 200 000 CHF - 400 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
“Beyer No. 17”
Ref. 3940, No. 770 017, circa 1985
A 18k yellow gold automatic perpetual calendar wristwatch with moon phases made for the 225th anniversary of Beyer in Zurich
Case: tonneau shape, snap-on case back, engraved on the back Patek Philippe No. 770 017 Fabriquée pour le 225ème anniversaire de Beyer à Zürich 1760–1985, signed
Dial: champagne with applied baton indexes, 3 subsidiary dials for the indication of months and leap year, aperture for the moon phases with date and days of the week with 24h display, numbered No. 17 and double signed Patek Philippe and Beyer
Movement: automatic with micro-rotor, nickel finished, caliber 240Q, 27 jewels, signed
Buckle/Clasp: 18k yellow gold buckle, signed
Dimensions: 36 mm
Weight: 62,9 g
Accessories: a presentation service box and a certificate for lot 228 from the Patek Philippe 150th Anniversary thematic auction, The Art of Patek Philippe, organized by Habsburg Feldman & Antiquorum, April 9th, 1989, signed by Osvaldo Patrizzi
Beyer Certificate: stating that it was entered in the register on August 6, 1985 and sold the same year a few days later on August 13, 1985
Provenance: acquired by the current owner from the thematic auction The Art of Patek Philippe celebrating the 150th anniversary of Patek Philippe in 1989 (The Art of Patek Philippe, Habsburg Feldman, April 9, 1989)
The Patek Philippe Reference 3940 stands as one of the most revered perpetual calendar wristwatches in horological history, representing a pinnacle of classical complications in an elegantly proportioned case.
Technical Specifications:
Movement: Caliber 240 Q, ultra-thin self-winding perpetual calendar movement
Case: 36 mm in yellow gold, white gold, rose gold, or platinum
Thickness: remarkably slim at approximately 8,2 mm total case thickness
Complications: perpetual calendar with day, date, month, moon phases, leap year indicator
Power Reserve: approximately 48 hours
Production Period: 1985–2006 (21 years of continuous production)
Movement Excellence: The Caliber 240 Q represents extraordinary miniaturization, measuring only 3,88 mm thick while incorporating the perpetual calendar mechanism. This ultra-thin construction required innovative engineering solutions, with the micro-rotor positioned off-center to minimize thickness while maintaining winding efficiency.
Design Philosophy: The 3940 exemplifies Patek Philippe’s philosophy of understated elegance. The clean, symmetrical dial layout presents all calendar indications with perfect clarity, avoiding visual complexity despite the movement’s sophisticated mechanics. The applied gold hour markers and dauphine hands maintain classical proportions.
Historical Significance: This reference succeeded the legendary 3450 and established the template for modern perpetual calendar wristwatches. Its 21-year production run demonstrates exceptional design longevity, with only subtle dial variations throughout its history.
Collector Perspective: The 3940 model marks the final generation of Patek Philippe perpetual calendars preceding the release of the current 5140 series. Beyer-signed examples from the initial production batch, especially those featuring English calendar displays like our present example, are among the rarest variants and consistently command substantial premiums within the collector community. The reference 3940 is considered today by many collectors as a key development in the history of complicated wristwatches at Patek Philippe and largely contributed to the revival of the Swiss Watch Industry. In 1985, the first 25 watches from that reference were produced to celebrate the 225th anniversary of Chronometrie Beyer in Zürich. Our present example is from the second, and rarer batch with only 10 examples made with the English calendar. It bears on the dial No. 17 and was featured in the selection of watches presented at the historic thematic auction organized in 1989 to celebrate the 150th anniversary of Patek Philippe in Geneva. Philippe Stern released the reference 3940 to coincide with the 225th anniversary of the eponymous retailer and show support for his close friend Theodore Beyer. The first 25 models were made with customized and numbered dials for Beyer. Numbers 1 to 15 had a German calendar display, while numbers 16 to 25 were in English, like our example.
All watches were delivered to Beyer in May 1985. Appropriately, the first model with 770.001 movement was given to Theodore Beyer, the No. 2 to the famous collector from Basel Eugen Gschwindt on July 9 1985, and is now on display at the Patek Philippe Museum.
The Patek Philippe Reference 3940, particularly the limited edition retailed by Beyer in 1985, holds a distinguished place in horological history due to its technical innovation, rarity, and the significant collaboration between Patek Philippe and Chronometrie Beyer.
Beyer Limited Series - Unique Features
Limited Production: Only 25 pieces were produced, with numbers 1–15 featuring German calendars and numbers 16–25 featuring English calendars.
Distinctive Dial: Each watch bore a champagne-colored dial with the Beyer signature and an individual number, a rarity for Patek Philippe timepieces.
Caseback Engraving: The solid caseback was engraved to mark the special occasion, adding to its uniqueness and collectibility.
Legacy and Collectibility Collectors highly prize the reference 3940 Beyer edition for its main historical importance, limited availability, and the exemplary craftsmanship it represents. Its creation during a time when mechanical watchmaking faced challenges after the quartz crisis in the 1970’s in the Swiss Watch Industry further cements its status as a testament to enduring quality and innovation in horology. In summary, our present example Patek Philippe Reference 3940 Beyer No. 17 is not just a timepiece but a symbol of collaboration, innovation, and the rich heritage of Swiss watchmaking. Voir le lot

Estimé 100 000 CHF - 150 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
Retailed by “Gübelin”, Ref. 1579
No. 868528/679665, circa 1953
A 18k yellow gold manual winding chronograph wristwatch with tachometer scale
Case: round with so called “spider lugs”, snap-on case back, case key maker “1”, signed
Dial: silvered with applied pyramidal indexes, feuille hands, two registers for the contant seconds and 30 minutes
indication, outer 1/5th minute track, outer tachometer scale, signed
Movement: manual winding, cal. 13-130, Côtes de Genève decoration, cut bimetalic balance spring, 23 jewels,
8 adjustments, micrometer regulator on the balance bridge, signed
Buckle/Clasp: 18k yellow gold buckle, stamped “PP & Co”
Dimensions: 36 mm
Weight: 51,4 g
Accessories: original invoice from Beyer Chronometrie and Patek Philippe service presentation box
The reference 1579 represents one of the most extraordinary achievements in Patek Philippe’s chronograph heritage and stands as a true grail among vintage chronograph watches. The “spider lugs” – this distinctive case design feature gives the reference 1579 its unmistakable character. These elongated, curved lugs extend gracefully from the case, creating an almost sculptural quality that earned the watch its arachnid nickname. The lugs’ elegant sweep perfectly complements the watch’s proportions and creates a distinctive silhouette that’s instantly recognizable to collectors. Produced in the 1940s and early 1950s, the reference 1579 was equipped with the legendary caliber 13 lines, one of the finest chronograph movements ever created. This movement, based on a Valjoux ebauche but finished to Patek Philippe’s exacting standards, delivered exceptional precision and reliability while maintaining the thin profile essential for elegant chronographs. What makes the 1579 particularly significant is how it embodies Patek Philippe’s mastery of sports complications during an era when such pieces were relatively rare. The watch typically featured a clean, legible dial design with applied markers and elegant hands, creating perfect harmony between sporting functionality and dress watch refinement. The reference 1579 has achieved legendary status among collectors, representing the pinnacle of vintage chronograph design. Its combination of distinctive case architecture, exceptional movement, and historical significance makes it one of the most coveted timepieces in the vintage market. According to the Patek Philippe scholar John Reardon, Collectability, today only 5 examples of a reference 1579 are known back to the market with Gübelin double signature on the dial. It makes the present example rarer and even more desirable for avid collectors of Patek Philippe vintage wristwatches. Voir le lot

Estimé 40 000 CHF - 60 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
Made for Beyer Chronometrie
Limited series of 25 pieces
Ref. 5205G-011
No. 5980119/6146902, circa 2016
A 18k white gold center seconds wristwatch with annual calendar, 24 hour indication and moon phases
Case: round, specific lugs, transparent case back with an inscription in black BEYER – 2016, signed
Dial: blue with applied indexes, three apertures for the days of the week, date and month indication, center seconds,
24 hour indication with moon phases in a register, outer minute track, signed
Movement: automatic, Côtes de Genève decoration, stamped with the “PP” hallmark, caliber 324 S QA LU 24H,
34 jewels, central rotor with Calatrava cross engraved, signed
Buckle/Clasp: 18k white gold buckle,
signed
Dimensions: 40 mm
Weight: 94,1 g
Provenance: from the original owner
Accessories: special certificate of origin with picture of the watch in a protective card box dated 28.07.2017, Beyer Chronometrie AG, presentation box and outer packaging, setting pin
Provenance: from the original owner
The reference 5205G-011 created for the Beyer anniversary in 2016 represents an extraordinary piece of horological history – a limited edition that combines Patek Philippe’s technical mastery with the celebration of one of Switzerland’s most prestigious watch retailers. This special edition, limited to only 25 examples, makes it exceptionally rare in the world of Patek Philippe collecting. The reference 5205 itself is already a remarkable timepiece, featuring an annual calendar complication that displays day, date, month, and moon phases while automatically adjusting for months of varying lengths, along with 24 hour indicator and moon phases. What makes this edition particularly significant is its connection to Beyer, the renowned Zurich-based watch house founded in 1760. Beyer’s relationship with Patek Philippe spans generations, and special editions created for such partnerships represent the highest level of horological collaboration. These pieces often feature unique dial signatures or subtle design elements that distinguish them from regular production models. The 2016 production date places this piece in Patek Philippe’s contemporary era, benefiting from modern manufacturing precision while maintaining traditional finishing techniques. With only 25 examples produced, this represents one of the most exclusive Patek Philippe pieces of recent years. Such limited editions, like the present one sold in 2017, typically appreciate significantly in value due to their extreme rarity and historical significance. Voir le lot

Estimé 40 000 CHF - 60 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
Ref. 5960 1A-OO1
No. 5845988/6007928, circa 2015
A stainless steel annual calendar with chronograph
Case: round, screw-down transparent case back, signed
Dial: white opalin with black obus applied indexes, three aperture for the days of the week, date and month
indication, power reserve indicator, bull eye chronograph register with hours and minutes indication, center seconds,
outer 1/5th minute track, luminous markers, signed
Movement: automatic, Côtes de Genève decoration, stamped with the “PP” hallmark, caliber CH 28-520 IRM QA 24H,
40 jewels, central rotor with Calatrava cross engraved, signed
Buckle/Clasp: stainless steel bracelet with deployant clasp, signed
Dimensions: 40 mm
Weight: 129 g
Bracelet length: 17,5 cm
Provenance: from the original owner
The reference 5960 represents a remarkable achievement in Patek Philippe’s modern collection, combining two of the manufacture’s most sophisticated complications in a single timepiece. This reference features the exceptional pairing of a chronograph with an annual calendar, creating what horologists call a “watch première”. The annual calendar automatically accounts for months with 30 and 31 days, requiring manual adjustment only once per year, while the chronograph provides precise timing capabilities for sporting or professional use. The stainless steel execution of the reference 5960 is particularly significant, as Patek Philippe rarely produces their most complex timepieces in steel. Initially launched in gold in 2006, the reference was then introduced in 2014 in its stainless steel version. This choice makes the watch more accessible while maintaining the technical excellence expected from Geneva’s finest manufacture. The steel case also provides a more contemporary, sporty aesthetic that complements the chronograph function. The movement powering this reference represents extraordinary horological engineering. Combining chronograph and calendar mechanisms requires exceptional skill in layout and coordination of multiple gear trains. The caliber must manage the chronograph’s start, stop, and reset functions while simultaneously tracking the varying lengths of months through its calendar programming. The dial design demonstrates Patek Philippe’s mastery of complex display integration. Multiple subdials and apertures show the chronograph registers, day, date, month, and moon phases in a harmonious composition that maintains excellent legibility despite the wealth of information presented. This reference exemplifies how modern Patek Philippe continues to push horological boundaries while maintaining their classical design principles. Voir le lot

Estimé 40 000 CHF - 60 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
Ref. 2526, No. 760 031/674 989
Circa 1953
A 18k yellow gold wristwatch with
enamel dial
Case: round, screw-down case back, special crown with logo “PP”, case back with still the inscription “18K”, signed
Dial: enamel, applied indexes, outer minute track, subsidiary seconds, signed
Movement: automatic, caliber 12-600 AT, Côtes de Genève decoration, 18k gold rotor with guilloché decoration, stamped
with Geneva Hallmark, also stamped “HOX” on the balance bridge, signed
Buckle/Clasp: 18k yellow gold buckle, stamped “PP& Co”
Dimensions: 36 mm
Weight: 51,2 g
Accessories: extract from the archives mentioning date of manufacture in 1953 and sold on September 7th, 1953
The reference 2526 holds an absolutely pivotal place in Patek Philippe’s history and represents a watershed moment in luxury watchmaking. It is still today one of the most significant references in the manufacture’s entire
catalog. Introduced in 1953, the reference 2526 was indeed Patek Philippe’s first series-produced automatic wristwatch, marking the Geneva house’s entry into the self-winding era. This was a bold step for a manufacture that had built its reputation on manual winding complications and dress watches of extraordinary refinement. What makes the reference 2526 truly exceptional is precisely what we have highlighted – the combination of automatic movement with enamel dials. These fired enamel dials represent the pinnacle of dial-making artistry, requiring extraordinary skill to achieve their perfect, lustrous finish. The enamel work on these pieces demonstrates Patek Philippe’s commitment to maintaining the highest decorative arts even as they embraced new technical innovations. The reference 2526 was powered by the caliber 12-600 AT, Patek Philippe’s first automatic movement, crafted to the manufacture’s exacting standards. This movement featured a distinctive rotor design and represented a significant technical achievement for the house. The historical importance of this reference cannot be overstated – it bridged Patek Philippe’s traditional craftsmanship with modern horological innovation. The enamel dial variants are particularly sought after by collectors today, as they represent the convergence of technical progress with artisanal excellence. Voir le lot

Estimé 30 000 CHF - 50 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
“World Time”, Ref. 5230P-001
No. 7496476/6549030
Sold on December 30th, 2022
A platinum automatic wristwatch with world time indication
Case: round, transparent case back, push-button on the edge, signed
Dial: dark blue with guilloché in the center, double 24 hours indication in Arabic numerals, outer ring with capitals of the world, signed
Movement: automatic, micro-rotor, caliber 240 HU, stamped with PP seal, 33 jewels, adjusted to heat, cold and
six positions, signed
Buckle/Clasp: platinum deployant clasp, signed
Dimensions: 38,5 mm
Weight: 114,5 g
Accessories: certificate of origin dated December 30th, 2022, presentation box and outer packaging, Patek Philippe
leather cardholder including leaflet for world time caliber 240 HU and product literature, VIP pass for the Patek Philippe museum, copy of original invoice from les ateliers du temps SA
World Time Mechanism: The 240 HU caliber features an ingenious world time system where the outer ring displays 24 city names representing global time zones. The inner 24-hour disc rotates once daily, allowing instant reading of time in any selected city. The day/night indicator uses contrasting colors to distinguish AM/PM periods across time zones.
Platinum Case Excellence:
The 5230P-001’s platinum construction demonstrates Patek Philippe’s mastery of precious metal working. The stepped bezel creates visual depth while maintaining the case’s elegant proportions. Platinum’s density provides substantial wrist
presence while its natural white color complements the sophisticated dial design.
Dial Architecture:
The guilloché center dial features hand-engraved patterns that create subtle light play. The world time rings are precisely calibrated, with the city disc and 24-hour indicator operating in perfect synchronization through the
movement’s gear train.
Collector Significance:
Platinum world time pieces from Patek Philippe represent exceptional rarity within the manufacture’s production.
The combination of useful complication, precious metal case, and limited availability creates strong collector
appeal.
Provenance: from the original owner
The Patek Philippe Reference 5230P-001 represents a sophisticated world time complication housed in the manufacture’s prestigious platinum case, combining global functionality with exceptional material craftsmanship.
Technical Specifications:
Movement: caliber 240 HU, ultra-thin self-winding world time movement Case: 38,5 mm platinum with stepped bezel design
Thickness: approximately 10,2 mm, remarkably slim for a world time complication
Complications: World time indication for 24 time zones with day/night indicator
Power Reserve: approximately 48 hours Crystal: sapphire with anti-reflective coating on both sides Voir le lot

Estimé 30 000 CHF - 40 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
Retrograde Perpetual Calendar
Ref. 5159 R – 001
No. 7295671/6313587, circa 2020
A 18k pink gold automatic retrograde perpetual calendar with moon phases, pink deployant clasp
Case: round shape, hinged vase back, signed
Dial: grey silvered, black Roman numerals, centre seconds, retrograde date indication, aperture for days of the week and months (English), bissextile year indication, outer minute track, signed
Movement: automatic, stamped PP, Côtes de Genève decoration, 30 jewels, calibre 324, rotor stamped with the Calatrava
cross, signed
Buckle/Clasp: 18k pink gold deployant clasp, signed
Dimensions: 38 mm
Weight: 109,1 g
Accessories: certificate of origin dated October 1st, 2020, presentation box and outer packaging, Patek Philippe
leather cardholder including leaflet for retrograde perpetual calendar caliber 324 S QR and product literature
Provenance: from the original owner
The Patek Philippe Reference 5159R represents one of the most sophisticated expressions of Haute Horlogerie, combining the perpetual calendar complication with a retrograde date display in a rose gold case.
Technical Specifications:
Movement: Caliber 324 S QR, self-winding mechanical movement
Complications: Perpetual calendar with retrograde date, moon phases, leap year indicator
Case: rose gold with sapphire crystal caseback
Display: The retrograde date hand sweeps across a 180-degree arc before instantly jumping back to the beginning of the month
Power Reserve: Approximately 45 hours
Notable Features:
The retrograde mechanism adds exceptional visual appeal to the perpetual calendar function. Unlike traditional date displays that advance incrementally, the retrograde hand creates a graceful arc across the dial before its dramatic return to position one. The perpetual calendar automatically accounts for varying month lengths and leap years until the year 2100, requiring no manual adjustment during this period. The moon phase indication maintains accuracy for 122 years before requiring a one-day correction.
Historical Context:
This reference exemplifies Patek Philippe’s mastery of complex complications, representing decades of horological refinement. The combination of perpetual calendar and retrograde display demonstrates the manufacture’s ability to merge technical prowess with aesthetic sophistication. Voir le lot

Estimé 6 000 CHF - 8 000,00 CHF
Par Artcurial Beurret Bailly Widmer à Basel le 11/03/2026 : Patek Philippe
Calatrava, Ref. 96
No. 964524/302016, circa 1950
A 18k yellow gold manual winding wristwatch with subsidiary seconds
Case: round, snap-on case back, case key maker “4”, signed
Dial: silvered with applied indexes, outer minute track subsidiary seconds, signed
Movement: manual winding, Côtes de Genève decoration, cut bimettalic balance spring, micrometer regulator on
the balance bridge, signed
Buckle/Clasp: 18k yellow gold bracelet with adjustable and extendable clasp with two initals “HF”, unsigned
Dimensions: 30 mm
Weight: 78 g
The Calatrava represents the very essence of Patek Philippe’s philosophy and stands as one of the most influential dress watch designs in horological history.
The story begins in 1932 with reference 96, created during the depths of the Great Depression. This watch emerged from a bold vision: to create the perfect dress watch through absolute purity of design. The reference 96 established what would become known as the “Calatrava style” – clean lines, perfect proportions, and an almost mathematical harmony between all elements.
What makes the Calatrava so remarkable is its adherence to the Bauhaus principle that “form follows function”. The original reference 96 featured a 30 mm case, considered ideal proportions for the era, with a dial of extraordinary clarity. No unnecessary elements, no superfluous decoration – just pure horological elegance. The influence of this design philosophy extends far beyond Patek Philippe itself. The Calatrava established the template for what a luxury dress watch should be, influencing countless manufactures over the decades. Its clean aesthetic became the gold standard for formal timepieces.
The collection takes its name from the Calatrava Cross, symbol of a Spanish military order, which Patek Philippe adopted as their emblem in 1887. This cross represents the values of excellence and tradition that the manufacture has maintained since 1839. Several great houses have drawn inspiration from this approach to pure, elegant design, each interpreting these principles through their own lens. Voir le lot