IWC Portuguese Chronograph Rattrapante Manual 18K RG
IWC 3712 Portuguese Chronograph Rattrapante, IW371211, 3712-11, 371211, 18k Rose Gold on a Strap with an 18k Rose Gold Tang Buckle, Manual Wind Movement, Split-Seconds Chronograph, Small Seconds, Applied Yellow Gold Arabic Numerals, Diameter: 40.9mm, Thickness: 12.5mm, Sapphire Crystal, Water Resistant to 3 atm, Like New with Box and Papers
More about Portuguese Chronograph Rattrapante Manual 18K RG
This is an 18K rose gold IWC Portuguese Chronograph Rattrapante IW371211. It has an alligator leather strap with a matching 18K rose gold folding deployment buckle, and a scratch resistant sapphire crystal. It has a pull-out signed winding crown, "mushroom" style split second chronograph push buttons, and a return push button for the split-seconds function at 10 o'clock on the left side case band. There is a solid case back secured with 4 screws engraved with "INTERNATIONAL WATCH CO. THE 41mm diameter round solid three-body case, curved lugs, and thin convex bezel, are polished/brushed. The dial is silver with applied rose gold Arabic numeral hour markers and pip hour indices on a black dot minute/chronograph second scale, and around the perimeter on an angled rehaut is a black 1/5 second chronograph scale with Arabic numerals every five seconds. It includes rose gold feuille leaf hour and minute hands and a blued center sweep chronograph seconds hand. There are two recessed silver subsidiary dials with black Arabic numerals and markers, including a small constant running seconds register at 6 o'clock with a gold indicator hand, and a 30-minute split-second chronograph totalizer with a blued indicator hand at 12 o'clock. It's water resistant to 30 meters/100 feet, it has a 44-hour power reserve at full winding, and the 13mm thick case, dial, and movement are all signed. This IWC Portuguese Chronograph Rattrapante IW371211 has a mechanical manual winding IWC caliber C76240 (base ETA caliber 7750/7760 with a rattrapante module created by Richard Habring) movement that's gilt brass with oeil-de-perdrix embellishment. It's constructed with 27 jewels, blued screws, a straight-line lever escapement, and a shock absorber mechanism. It has a monometallic balance adjusted to 5 positions, a self-compensating flat balance spring, and a hacking seconds mechanism for precise time setting. The mechanism oscillates at a frequency of 21,600 vph (3Hz). The IWC Portuguese Chronograph Rattrapante IW371211 was released in 1995 and it was produced until 2004.
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