Patek Philippe 5250G-001 Advanced Research Annual Calendar 18K White Gold LIMITED (30657)

30657 Patek Philippe 5250G Advanced Research Annual Calendar, 5250G-001, 5250G001, Limited Edition to 100 Pieces, 18k white gold on a strap with an 18k white gold deployant buckle, automatic movement (Calibre 315 S IRM QA LU), silicon escape wheel, Spiromax balance spring, annual calendar, day, date, month, moon phase, power reserve indicator, centered sweep seconds hand, grey dial with applied numerals and hour markers, sapphire crystal, display back with inscription "Patek Philippe Advanced Research", water resistant to 2.5 atm, diameter: 39mm, thickness: 11.2mm. Like New with Advanced Research Box and papers dated December of 2005.

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More about Patek Philippe 5250G-001 Advanced Research Annual Calendar 18K White Gold LIMITED

This is an 18K white gold Patek Philippe Advanced Research Annual Calendar 5250G-001. It's self-winding with a silver-grey dial and applied rose gold Arabic numeral hour markers and baton indexes. It has a sweep seconds hand with luminescent inlays, an outer minute/seconds rail, a moon phase sub dial, and a rectangular date window at 6 o'clock. The day marker sub dial is at 9 o'clock, and the months are at 3. There is a plus-minus power reserve of 45 hours at 12 o'clock, and the case, dial, and movement are signed. The solid two-body case is polished, with a display screw-down case back including a cyclops-magnifying lens over the escape and balance wheels. It has a stepped, rounded bezel, concave lugs, and sapphire crystals. The back crystal is inscribed: Patek Philippe Advanced Research. It's water resistant to 2.5 atm.

The automatic calibre 315 S IRM QA LU movement is rhodium-plated with fausses cotes decoration and the stamp of the Seal of Geneva quality mark. It's built with 36 jewels, 355 parts, and it oscillates at 28,800 vibrations per hour. It has a 21K gold rotor with zirconium ball bearings, a silicon escape wheel, a self-compensating Silinvar Spiromax balance spring, and a straight-line lever escapement. The leather strap has an 18K white gold double-fold deployant clasp.