Patek Philippe. An exceptionally rare and fine 18K pink gold automatic semi-skeletonized minute repeating perpetual calendar wristwatch with retrograde date, moon phases, leap year indication, original certificate, sales tag, pin and boxes

The present reference 5304R is believed to be the only second example of this model to appear in public to date, emphasising the outstanding rarity of this exclusive "Grand Complication".

Consigned by its original owner and still in the sealed Patek Philippe transparent protective bag it is a rare trophy for the collector of exceptional timepieces.

Reference 5304R
Launched in 2014, the year of Patek Philippe’s 175th anniversary, ref. 5304R is a worthy representative of the firm’s longstanding history of exceptional watchmaking artistry. One of the manufacturer’s few semi-skeletonized models it is an absolute micromechanical masterpiece featuring complex mechanisms and an elaborate case decoration.

The transparent dial reveals the impressive cosmos of this Grand Complication, combining a minute repeating mechanism, a perpetual calendar, a retrograde date and moon phase indication. The week days, month and leap year displays are shown in white on an ingenious system of three sapphire crystal discs rotating over black windows in the background. The current date is indicated with a retrograde hand on the outer black ring. A small hand and two round silhouettes show the moon phase with high precision.

The sides of the case and the lugs are embellished with pierced floral decorated inlays, the same decoration can be found on the micro-rotor and on the repeating slide and is also represented in the shape of the pierced hands.

The sapphire crystal case back reveals the sophisticated R 27 PS QR LU calibre and its staggering 517 parts, the decorated 22K mini-rotor, Patek Philippe’s large Gyromax balance, the two hammers and the gongs of the minute repeating mechanism.