IWC IW503203 Portuguese Perpetual Calendar Double Moon 18K White Gold (31043)

31043 IWC 5032 Portuguese Perpetual Calendar IW503203 5032-03 503203, 18K white gold on a strap with an 18K white gold deployment buckle, automatic caliber 51614, blue dial with white gold hands & white gold applied Arabic numeral hour markers, perpetual calendar, day, date, month, northern and southern hemisphere moonphase display, 4 digit year, 7 day power reserve indicator, small seconds at 9 o'clock, display back, sapphire crystal, water resistant, diameter: 44.2 mm, thickness: 15.5 mm, like new with box and papers dated 11/2015.

$19,900

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More about IWC IW503203 Portuguese Perpetual Calendar Double Moon 18K White Gold

This is an 18K white gold IWC Portuguese Perpetual Calendar, IW503203. It has a leather strap with a matching 18K white gold deployment buckle, and a scratch resistant sapphire crystal. The solid 44.2mm diameter three-body case, downturned lugs, and stepped angled bezel are polished; the transparent skeleton display sapphire case back is secured with 6 screws. The dial is blue with white gold feuille hands and applied Arabic numeral hour markers, and outer dot minute markers. There is a contrasting subsidiary dial for the small seconds and the day of the week at 9 o'clock, a dial for the month at 6 o'clock, and a Northern and Southern hemisphere moon phase display at the 12 o'clock position. There is a 7-day up-and-down indication sub dial at 3 o'clock, and an aperture window for the 4-digit year is between 7 and 8 o'clock. It's water resistant to 30 meters/100 feet, and it has a power reserve of 7 days at full wind. The 15.5mm thick case, dial, and movement are all signed.

The automatic self-winding IWC caliber 51614 movement is rhodium plated with fausses cotes embellishment. It's constructed with 62 jewels, a shock absorber mechanism, and a straight-line lever escapement. It has a monometallic balance that's adjusted to 5 positions, a self-compensating Breguet balance spring, and a micrometer regulator. The mechanism oscillates at a frequency of 28,800 vph (4 Hz). The skeletonized rotor contains the gold medallion inlay engraved "IWC - Probus Scafusia."