IWC 371401 Portuguese Chronograph Silver Dial Gold Numerals SS (30733)

30733 IWC 3714 Portuguese Chronograph, 371401, IW371401, 3714-01 stainless steel on a strap with a stainless steel deployant buckle, automatic, silver dial with applied rose numerals and hands, chronograph, small seconds at 6 o'clock, sapphire crystal, water resistant, diameter: 40 mm, thickness: 13 mm, Like new with box.

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More about IWC 371401 Portuguese Chronograph Silver Dial Gold Numerals SS

This is a stainless steel IWC Portuguese Chronograph IW371401. It has an alligator leather strap with a stainless steel double deployment clasp, and a domed scratch resistant sapphire crystal. It has a pull out winding crown, and round chronograph push buttons. There is a solid case back secured with 4 screws, and it's engraved with "INTERNATIONAL WATCH CO.," and a serial number. The 40mm diameter solid three-body case, curved lugs, and overhanging convex bezel, are polished/brushed. It has gold feuille hands, and a center sweep chronograph hand. The dial is silver with applied rose gold Arabic hour numerals, outer gold dot minute divisions, and gold feuille hands. Around the perimeter is a quarter-seconds scale with 5-minute/seconds sectors. There are two recessed silver subsidiary dials with black Arabic numerals, markers, and gold indicator hands, including a running small seconds register at 6 o'clock, and a 30-minute chronograph totalizer at 12 o'clock. It's water resistant to 30 meters/100 feet, it has a 44-hour power reserve at full wind, and the 13mm thick case, dial, and movement are all signed.

This IWC Portuguese Chronograph IW371401 has a mechanical automatic caliber 79240 (Based on the ETA/Valjoux 7750) movement that's rhodium plated with oeil-de-perdrix and cotes de Geneve 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 mechanism oscillates at a frequency of 28,800 vph (4 Hz).

The round case design Portuguese watches were initiated in 1939 by IWC to honor Portugal’s great seafaring explorers like Vasco da Gama, Ferdinand Magellan, and Bartolomeu Dias. The IWC Portuguese Chronograph IW371401 was introduced in 1998 and it was produced until 2012.