IWC IW371413 Portuguese Chronograph 18k White Gold Black Dial (31566)

31566 IWC 3714 Portuguese Chronograph IW371413 371413 3714-13, 18k white gold on a strap with an 18k white gold tang buckle, automatic caliber 79350 movement, 30-minute chronograph, small seconds at 6 o'clock, black dial with applied Arabic numeral hour markers, sapphire crystal, water resistant, diameter: 41mm, thickness: 13mm, Like New with Box and booklet.


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More about IWC IW371413 Portuguese Chronograph 18k White Gold Black Dial

This is a white gold IWC Portuguese Chronograph IW371413. It has an alligator leather strap with a matching white gold tang buckle, and a scratch resistant domed sapphire crystal. The 41mm diameter solid three-body case, overhanging "deep dish" bezel, downturned lugs, and screw-down case back secured with four screws, are polished/brushed. The matte black dial has applied steel Arabic hour numerals and outer dot minute divisions. It has steel feuille hands, and an outer most minute track with a 1/5th seconds scale. The round pushbutton chronograph has subsidiary dials for the small constant seconds 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.

This IWC Portuguese Chronograph IW371413 has a mechanical automatic self-winding caliber 79350 movement that's gilt brass with oeil-de-perdrix embellishment. It's constructed with 31 jewels, a monometallic balance adjusted to 5 positions, and a straight-line lever escapement. There is a shock absorber mechanism and a, self-compensating flat balance spring, as well as a hacking seconds mechanism.

The round case design Portuguese family was initiated in 1939 by IWC to honor Portugal’s great seafaring explorers like Vasco da Gama, Ferdinand Magellan, and Bartolomeu Dias. The line has grown to have formidable complications and designs that reference the tradition of nautical instruments.