IWC IW500109 Portuguese 7 Day Automatic SS Black Dial (31997)

31997 IWC 5001 Portuguese 7 Day Automatic, 500109, IW500109, 5001-09, stainless steel on a strap with a stainless deployant buckle, automatic movement, date, small seconds, 7 days power reserve, diameter: 42mm, thickness: 14mm, black dial with applied silver arabic numerals and steel blued hands, sapphire crystal, display back, water resistant, like new with original box.

$6,250

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More about IWC IW500109 Portuguese 7 Day Automatic SS Black Dial

This is a stainless steel IWC Portuguese 7 Day IW500109. The leather strap has a stainless deployment buckle, a sapphire crystal with antireflective coating on both sides, and a screw-down sapphire crystal display case back. The 42mm diameter solid three-body case and downturned lugs are polished/brushed. It has a screw-down crown, and a calendar aperture at 6 o'clock. The dial is black with applied silver Arabic numeral hour markers, an outer minute track with dot divisions, and steel feuille hands. A small hacking seconds sub dial with a stop function is at 9 o'clock, and the 7-day power reserve dial is at 3. It's water resistant to 30 meters/100 feet, and the 14mm thick case, dial, and movement are all signed.

This IWC Portuguese 7 Day IW500109 mechanical automatic self-winding IWC calibre 5000 Pellaton movement is rhodium plated with fausses cotes embellishment. It's constructed with 44 jewels, a straight-line lever escapement, and a shock absorber mechanism. It has a Glucydur beryllium alloy balance with high-precision adjustment cam on balance arms, and a self-compensating Breguet balance spring. There is a skeletonized bi-directional rotor with an 18K gold medallion inlay engraved "IWC -Probus Scafusia," (Fine Schaffhausen).

The IWC Portuguese 7 Day IW500109 debuted in 2004. It references the first IWC Portuguese watches of the 1930's, with the railway track chapter ring, Arabic numerals, and feuille hands.