IWC Portugieser Automatic 42 IW500705

The case measures 42.3mm across and 14.1mm thick, with a 22mm lug width. Case material: Stainless steel. Case size alone is a poor guide to how a watch wears; lug-to-lug length and how the bracelet drops off the case matter more, which is why we suggest trying one on before you commit.

Automatic, IWC Cal. 52010 (Pellaton winding), 7-day power reserve. Power reserve is 168 hours. It beats at 28,800 vph. The movement uses 31 jewels.

It is rated to 30 meters, about 98 feet. That covers rain and hand washing. It is not rated for swimming. One caution that applies to every watch on this page: a water resistance figure describes a new watch with fresh gaskets. On a piece that is years past its last service, treat the rating as unknown until it has been pressure tested.

IWC produced this reference from 2015 to 2020. Production years matter when you are valuing one, because dial, bezel and bracelet details often changed inside a single reference run.

IW5007 = Portugieser Automatic 42mm, 7-day Pellaton automatic. Reading the reference is the fastest way to confirm that a watch is what the seller says it is, before you get anywhere near the movement.

Portugieser Automatic 42 (7-day, white dial). Collector nicknames are not official IWC names, but they are what people actually search for and what they are called across a showroom.

Yes. We buy this reference outright, and we lend against it if you would rather keep it. We are a family-owned San Diego buyer established in 2006, our appraisers are GIA-trained, and the appraisal is complimentary with no obligation to sell. You can bring it to our Gaslamp showroom at 907 Sixth Ave or start online. If you are looking to buy this reference instead, tell us and we will let you know when one comes in.