
Cozmopak's inquiry into the production numbers of the Patek Philippe Ref. 5204 sparks a fascinating discussion among collectors. This article delves into the nuances of Patek Philippe's split-seconds chronograph perpetual calendar lineage, exploring the evolution from the Ref. 5004 to the Ref. 5204. Readers will gain insight into the technical and historical factors influencing the perceived rarity and collectibility of these grand complications.

The Patek Philippe reference 5004 is a highly regarded grand complication, combining a split-seconds chronograph with a perpetual calendar. This reference was a significant offering in Patek Philippe's catalog, representing a sophisticated blend of technical mastery and traditional watchmaking. It was produced in limited numbers, making it a sought-after piece among collectors of complex horology.
The watch features a 36mm platinum case with a thickness of 15mm, housing the manual-winding caliber CHR 27-70 Q. This movement provides a power reserve of 60 hours and is protected by a sapphire crystal. The dial is presented in silver opaline, offering clear legibility for its numerous indications. The case is water-resistant to 30 meters.
As a split-seconds perpetual calendar, the reference 5004 appeals to collectors who value both intricate mechanical solutions and classical design. Its production run from 1996 to 2012 saw various dial and case material iterations, though platinum was a prominent offering. The integration of two major complications in a relatively compact case underscores its appeal within the realm of high-end watch collecting.
Then 5004<5204, mainly because as production capacity and capability increases, PP can make more of anything later. I can sense you are feeling the itch, lol…don’t overthink, any PP PCC or Split PCC are all rare but never be as rare as your Independents, especially your 1/1 RG right? Find the dial or metal variant that you feel most suitable and enjoy! Seeing how “vibrant” our watch scene in OR, whether the 5204R and 5004G, no one else in OR (exaggerated) besides our mutual friend has such watch
where the 5204 has in house cal 29-535 and pp can make as many as they require
The Lemania movements were so heavily decorated and modified with the perpetual calendar modules that they are virtually unrecognizable from their originals. Also, my understanding is that Lemania was an industrial scale manufacturer. I doubt they were a bottle neck. Seems much more likely to me that the rate limiting steps were the ones performed at Patek.
And yes, OR is not known for its watch collectors (except for the very notable exception of our esteemed mutual friend)! Truth be told, I am very seriously considering thinning the herd SIGNIFICANTLY, and hibernating with just a nice Patek for a little while as my passion rekindles.
where the 5204 has an inhouse designed which would be cheaper to produce with the pp seal. so the 5004 was stopped due to modification/production costs.
Not sure if that's accurate, but it's the only number I've been able to find thus far.
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