IWC 3712 Portuguese Chronograph Rattrapante SS COMPLETE (30870)

30870 IWC Portugieser 3712 Chronograph Rattrapante, 371201, 3712-01, stainless steel on a strap with a stainless steel deployant buckle, manual wind, split-seconds or rattrapante chronograph, small seconds at 6 o'clock, silver dial, applied rose gold Arabic numerals, sapphire crystal, water resistant to 3 atm, diameter: 41mm, thickness: 13mm, Like New with Box, original purchase receipt, and Papers; dated 12/2001


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More about IWC 3712 Portuguese Chronograph Rattrapante SS COMPLETE

This is a stainless steel IWC Portuguese Split Second Chronograph, reference 3712. It has an alligator leather strap with a matching stainless steel buckle, and a scratch resistant sapphire crystal. The split-second chronograph has round buttons with a return button at 10 o'clock. The 41mm diameter solid three-body case, thin cupped bezel, and downturned lugs are polished/brushed The dial is matte silver with rose gold feuille hands, a center sweep second chronograph hand, and applied rose gold Arabic numeral hour markers. There is an outer engraved minute/seconds track, and an outermost track with 1/5th seconds. It has a subsidiary small seconds dial at 6 o'clock, and a 30-minute register at 12. It's water resistant to 30 meters/100 feet, and the 13mm thick case, dial, and movement are all signed.

The manual winding IWC calibre C76240 movement is gilt brass with oeil-de-perdrix embellishment. It's constructed with 27 jewels, 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.

IWC debuted their first Portuguese split-second chronograph in 1995. The signature round case design of the Portuguese family was initiated in 1939 to honor Portugal’s great seafaring explorers like Bartolomeu Dias, Vasco da Gama, and Ferdinand Magellan.