Patek Philippe  Turtles  Collection Ref. 2546 Guide
Vintage

Patek Philippe Turtles Collection Ref. 2546 Guide

By quattro · May 3, 2026 · 6 replies
quattro
WPS member · Patek Philippe forum
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Emmanuel's detailed presentation of the Patek Philippe 'Turtles' collection offers a crucial re-evaluation of these vintage references. By meticulously distinguishing nine distinct cases and clarifying historical ambiguities, he provides an invaluable resource for collectors and enthusiasts. This work builds upon previous scholarship while offering fresh insights into a lesser-understood segment of Patek Philippe's heritage.

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The “Turtlescollection is a series of Patek Philippe watches produced from 1954 to 1956 (?), which all feature:

  • A case made by François Markowski (Geneva master case-maker, key number 8).
  • A dial made by Stern Frères.
  • A 10-200 manual-winding caliber movement with 18 jewels.

My presentation and photographic overview of this collection owesgreat deal to the previous presentations of this collection made by Marcus Siems (on goldammer.me) and Eric Tortella (on monacolegendauctions.com). 

However, by clearly distinguishing 9 cases rather than proceeding by reference numbers (which are subject to debate), I have tried to correct the following points:

  • not omitting case no. 9
  • clearly differentiating case no. 5 from cases no. 4 and no. 6
  • highlighting the confusion surrounding the referencing of certain models.



Let's have a look at each of them one by one.


A/ CASE NO. 1 - REF. 2546

Round case with what I would personally call “earlugs. Marcus Siems calls them “twisted”.







Watch by Patek Philippe, 2546, Calatrava


credit: Hodinkee courtesy of Roni Madhvani (1-2) & Phillips


B/ CASE NO. 2 - REF. 2547

Round case with straightwing” lugs. Marcus Siems calls them “spaceship”.

The photos below are borrowed from richterlaw's post here on WPS in 2013.








credit: richterlaw

This case, ref. 2547, is supposedly also photographed in Martin Huber and Alan Banbery's book, Patek Philippe Genève Wristwatches , on page 154 of the second edition (1998), but the photo shows a completely different model and is clearly an error

If any of you have the first edition from 1986, the photo, if correct, could look like this:



C/ CASE NO. 3 - REF. 2548

Round case with “overhangingfaceted lugs.

The dial variations concern the hour markers.












credit: Roni Madhvani (1-3), Antiquorum (4-5) & Christie's (6)


D/ CASE NO. 4 - REF. 2549

Round case with stepped bezel featuring four  rounded grooves and “devil's hornslugs.

Dial variations concern color, numerals and pattern.

Black dials











Silver dials








credit: Hodinkee (1-2) and Revolution (3) courtesy of Roni Madhvani (also photo 4 & 6-8), Heritage Auction (5) & Christie’s (9)


E/ CASE NO. 5

Round case with stepped bezel featuring only three  rounded grooves and “devil's horns” lugs.

The only photo I know of this model is on page 153 of the book by Martin Huber & Alan Banbery, Patek Philippe Genève Wristwatches , second edition (1988).

It is referenced as no. 2549/2, but not everyone seems to agree...




Personal photos of my copy


F/ CASE NO. 6 

Round case with stepped bezel featuring only two flat  grooves and “devil's horns” lugs.

The only photo I know of this model is on page 153 of the book by Martin Huber & Alan Banbery, Patek Philippe Genève Wristwatches , second edition (1988).

It is referenced as no. 2549/1 (see photo of page 153 above), but this ref. number seems to correspond to the following case (see the caseback and extract from the archives of case no. 7 below)...


Personal photo of my copy


G/ CASE NO. 7 - REF. 2549/1

Round case with stepped bezel featuring four rounded grooves and overhanging horn-shaped curled lugs. Marcus Siems calls them “taurus”.

Dial variations concern numerals and texture.


























credit: Future Grail (1-10), @phxwatchnut (11-12) & Bonhams (13)


H/ CASE NO. 8

Round case with stepped bezel featuring four rounded grooves and overhanging cornucopia lugs. Marcus Siems calls them “c-shape”.

This model is generally referenced as no. 2550, but the same number is also used for the following case no. 9...

Dial variations concern numerals and texture.










credit: Roni Madhvani (1-3) & Antiquorum


I/ CASE NO. 9

This lug-less round case with integrated bracelet and stepped bezel featuring four rounded grooves is the one which has been forgotten or left aside by Marcus Siems and Eric Tortella!

Antiquorum references it as no. 2549-1, but FutureGrail has evidence that it is no. 2550  (see photo of the caseback below)...

The first example is pink gold with a salmon dial; the second example is yellow gold with a gold dial.

Pink gold





Yellow gold







Side by side with a case no. 7 (ref. 2549/1)






credit: @2tonevintageofficial (1 & 9), @markkauzlarich (2), FutureGrail (3-5) & Hodinkee courtesy of FutureGrail (7-8)


In conclusion, here are the summary tables previously proposed by Marcus Siems and Eric Tortella, which both:

  • Omit case no. 9.
  • Do not clearly distinguish case 5 (only three grooves on the bezel) from case 4 (four grooves) and case 6 (two flat grooves).

Marcus Siems





Eric Tortella


credit: Marcus Siems on Goldammer & Eric Tortella on invaluable.com


And here again is the alternative summary table that I propose and which I hope is a little more precise as far as collecting and differentiating all the cases is concerned...




I hope you've enjoyed this presentation.

Feel free to share your feelings and reactions.

Thanks for reading.

Best, Emmanuel

About the Patek Philippe Calatrava Ref. 2546

The Patek Philippe Calatrava reference 2546 is part of a series of watches produced in the mid-1950s, often associated with the "Turtles" collection due to shared characteristics. This reference exemplifies the understated design principles of the Calatrava line, focusing on clean lines and a balanced aesthetic. It represents a period of classic dress watch production for the brand, appealing to collectors who value historical Patek Philippe design.

The case of the reference 2546 was crafted by François Markowski, a notable Geneva master case-maker, identified by key number 8. The dial was produced by Stern Frères, a long-standing collaborator with Patek Philippe known for high-quality dial manufacturing. It houses a manual-winding caliber, reflecting the prevalent movement technology of its era.

This reference holds interest for collectors seeking examples from a specific production period, particularly those drawn to the collaborative craftsmanship between Patek Philippe and its specialized suppliers. Its design and construction are indicative of mid-20th century watchmaking standards, offering a tangible link to the brand's heritage of elegant timepieces.

Specifications

Caliber
10-200
Case
Yellow gold
Diameter
33mm
Dial
Silver
Crystal
Plexiglass

Key Points from the Discussion

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The Discussion
SA
SALMANPK
May 3, 2026
WoW ❤️, what a Wonderful Variation of Case and Lug Design, they took Risks and were Creative, Merci Emmanuel 😊🙏👍

QU
quattro
May 3, 2026
Indeed, Salman, creativity was phenomenal! 🌸

Best, Emmanuel

KM
KMII
May 3, 2026
Another great research piece of yours, Emmanuel 👍🏻👏🏻🙏🏻

QU
quattro
May 3, 2026
Thank you so much, K! 🌼

Best, Emmanuel

GL
GLau
May 3, 2026
WOW Emmanuel ! The lugs of 2546 is so

smooth and sultry ! Great finds !

QU
quattro
May 3, 2026
Yes, impressive lugs, Gordon! Thank you!

Cheers, Emmanuel

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