Patek Philippe 5101 10- Day Tourbillon
Patek Philippe 10 day tourbillon
The platinum rectangular case has triple stepped case sides. Case dimensions are 30mm wide by 52mm long by 12mm thick. The front and display back crystals are sapphire. The finish is mirror polished. Patek’s signature Top Wesselton diamond is set into the case between the 6 o’clock lugs.
Dial is salmon colored with applied blackened Breguet numerals and blackened Feuille style hands. There is a power reserve indicator beneath 12 o’clock and a subsidiary seconds dial above 6 o’clock. “Tourbillon” and the movement’s serial number are printed on the dial.
It’s a formed movement, which is the old school approach of using a rectangular movement in a rectangular case. To achieve the power storage capacity to accomplish a 10 day power reserve, the master watchmakers at Patek Philippe came up with a double mainspring/double barrel system.
Patek also built a one minute tourbillon into this remarkable Caliber TO 28-20/222. The tourbillon cage is not visible from the front of the watch, as so many are, because the lubrication that Patek decided to use for this movement is sensitive to light. The movement has 29 jewels, is adjusted to heat, cold and isochronism and in 5 positions and is stamped with the Geneva Seal.
Strap is brown hand sewn crocodile with a platinum Patek deployant clasp.