====== Patek Philippe Gondolo 10 Day Tourbillon 5101 ======
{{wst>image_cr|Patek Philippe|Ref. 5101P|Patek Philippe Ref. 5101P "10 Day Tourbillon"|250px}}

{{wst>image_r|Patek_Philippe_28-20_222|Form movement 28-20/222\\ © [[Patek Philippe]]|150px}}

{{wst>image_r|Patek_Philippe_28-20_222 ZB|Form movement 28-20/222\\ © [[Patek Philippe]]|150px}}

**Ref. 5101P "10 Day Tourbillon"** is an elegant men's wristwatch by [[Patek Philippe]].

This [[2003]] presented masterpiece from the [[Geneva]] [[manufacture]] for the first time brings together in a small space two [[complication]]s that claim usually plenty of space a series-connected [[double barrel]] for [[10-day|10 day]]s [[power reserve]] and a [[tourbillon]], which turns around its own axis once per minute behind the caseback with [[sapphire crystal]].

The rectangular [[form movement]] Calibre [[PP 28-20|28-20/222]] is set in motion by [[manual winding]] and like each bracelet tourbillon of [[Patek Philippe]] has an official [[chronometer]] certificate of [[COSC]]. It is also awarded the [[Geneva Seal]].

The case in [[Art Déco]] style is made of [[platinum]] (950). It is water resistant to 25 meters.

Under the [[sapphire crystal]] lies the 18-carat gold dial in "vintage rose" color with black oxidized gold Breguet numerals, small seconds at 6 o'clock and a 10 days [[power reserve indicator]] at 12 o'clock, the fine label with the brand name, the inscription "Tourbillon" and the individual movement number.

The screwed caseback also has a [[sapphire crystal]], releasing the view to the carefully decorated [[movement]]. As an indication of its valuable material the platinum case of Ref. 5101P is decorated with a small [[diamond]] between the lugs at 6 o'clock. The elegant piece is worn with a hand-sewn brown crocodile leather strap, which is held together by a platinum clasp matching to the case.

[[Patek Philippe]] won the "Aiguille d'Or" Grand Prix at the [[Grand Prix d'Horlogerie de Genève]] for the Ref. 5101 P "10 Jours Tourbillon" in November, [[2003]].

==== "Obligated to confidentiality" ====
It is typical of the Patek Philippe Ref. 5101P, that its elaborate interior cannot be seen from the outside. Only the tiny print "Tourbillon", the individual movement number and the 10 days power reserve indicator on the dial indicate the extraordinary mechanism of the watch. The reason for this discrete presentation of a fascinating [[complication]] lies, in addition to the necessary retention of [[Patek Philippe]], also the important aspect of technical reliability. The oil necessary for the lubrication of the tourbillon is sensitive to ultraviolet radiation and after a few months can lose its lubricating ability under the influence of sunlight. The consequences would be increased friction and wear as well as a deterioration of accuracy. This can not be the target of watches, which, like [[tourbillon]]s, are destined to attain the most accurate [[rate]]. [[Patek Philippe]] therefore consistently avoids to uncover the [[tourbillon]]s through a hole in the dial and expose it to the harmful influence of daylight. The refined design only opens up to the viewer through the [[sapphire crystal]] caseback, revealing the intricate bogie, protected from direct sunlight, regularly rotating once per minute on its axis.

Because of its extremely labor-intensive construction the Ref. 5101P "10 Jours Tourbillon" can be produced only in a small edition and with a few dozen pieces per year will always remain a rarity.

===== Literature =====
  *[[Das ZEITGEFÜHL-Uhrenbuch]]; Author [[Gerd-Lothar Reschke]]; ISBN 3-938607-61-0


{{tag>Watch_models Watches_with_tourbillon Patek_Philippe_models Patek_Philippe_references}}