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Patek Philippe "Advanced Research" Annual Calendar Moonphase Discontinued

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Condition Unworn
Scope of delivery
Original box, original papers
Available now
Expected delivery
May 11, 2021 - May 19, 2021
Payment Method
Bank transfer

Reviews: 133
This dealer is from New York, United States of America.
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Basic Info

Listing code 24C2Z3
Brand Patek Philippe
Model Annual Calendar
Reference number 5350R-001
Dealer product code 12677
Movement Automatic
Case material Rose gold
Bracelet material Crocodile skin
Year of production Unknown
Condition Unworn (Mint condition, without signs of wear)
Scope of delivery
Original box, original papers
Location United States of America, New York, New York


Movement Automatic
Movement/Caliber 324 S IRM QA LU
Power reserve 45 h
Number of jewels 36
Frequency 28800 A/h


Case material Rose gold
Case diameter 39 mm
Thickness 11.7 mm
Water resistance 2.5 ATM
Crystal Sapphire crystal
Dial Grey
Dial numerals Arabic numerals


Bracelet material Crocodile skin
Bracelet color Brown
Clasp Fold clasp
Clasp material Rose Gold


Moon phase, Date, Month, Annual calendar


Display back, Central seconds, Luminous hands, Power Reserve Display, Limited Edition



A year after the launch of the first Swiss lever escapement with a silicon escape wheel (patent application No. EP05006186), Patek Philippe presents an additional fundamental innovation: the Spiromax balance spring made of Silinvar. It is an epochal step forward in the constant quest for isochronism in portable mechanical watches. On the occasion of Baselworld 2006, the Geneva workshops will showcase the first watch with this innovation in a second limited "Patek Philippe Advanced Research" edition: the Ref. 5350 with a Spiromax spring and a silicon escape wheel. Isochronism is the key to every measurement of time based on any form of vibration. The greater the regularity of the vibration, the better the movement can be adjusted to achieve a high rate accuracy. If the source of the vibration is perfect, it is called isochronous. exhibition case back inscribed “Patek Philippe Advanced Research” with cyclops magnifier over the silicon escape wheel

The first Patek Philippe watch with a Spiromax spring: the Ref. 5350 Annual Calendar in a limited "Patek Philippe Advanced Research" special edition A pioneering invention like the Spiromax spring deserves to be showcased. A second limited "Patek Philippe Advanced Research" edition of the self-winding Annual Calendar Ref. 5350 in 18K rose gold is therefore being launched on the occasion of Baselworld 2006. Its caliber 324 S IRM QA LU is the first movement fitted with a Spiromax spring made of Silinvar. As a further exclusive feature, it is also equipped with a silicon escape wheel. To do justice to these technical innovations, the movement has a specially shaped balance cock that reveals a large portion of the Spiromax spring and the going-train bridge is milled so that the mysterious blue-violet sheen of the nearly black silicon escape wheel is more readily visible. Additionally, the sapphire-crystal back has an integrated loupe and bears the inscription "Patek Philippe Advanced Research." The solid 21K gold winding rotor features a zirconium ball bearing. Like the silicon escape wheel, the balls run dry and never need to be lubricated. The edition of this "Patek Philippe Advanced Research" model, the Ref. 5350R, is limited to three hundred watches.

Also known as: Patek Philippe 5350R-001, Patek 5350R-001, 5350R001, 5350R_001, 5350R.001, Patek Philippe 5350R


Motion in Time

56 West 47th Street
New York, NY 10036
United States of America
Show phone/fax number
Tel.: [+1] 212-302-1678
Fax: [+1] 212-302-3373
We speak:
Trusted Seller since 2008
1,525 watches listed
This dealer owns a store in which you may view their watches.
Number of recommendations from other Chrono24 dealers: 16
Watches sold with Buyer Protection: 186

4.9 out of 5 stars  |  Reviews: 133

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