Fake Portugieser Automatic 31 is a search phrase that appears on replica watch listings. It does not match any IWC reference number. IWC's Portugieser Automatic line uses references such as IW500701 and IW500710. The number 31 in these listings is a seller label, not an IWC model code. Ask for a reference number before you pay.
What the IWC Portugieser Automatic Is
IWC launched the Portugieser Automatic in 2000. The current line has two main sizes. The Portugieser Automatic 40 has a 40.4 mm case and the calibre 82200 movement. The Portugieser Automatic 42 has a 42.3 mm case and the calibre 52010 movement with a seven day power reserve. Both use sapphire crystals on the front and a sapphire display back. No model in the line measures 31 mm.
Where the 31 Label Comes From
Replica sellers reuse numbers for several things: jewel counts in the copy movement, case diameter, or an internal SKU. A 31 mm case is smaller than every Portugieser Automatic. When a listing shows 31 next to Portugieser Automatic, the number is a seller label. It is not a size or a factory code from IWC.
Points That Separate a Copy From the Real Watch
- Power reserve. The calibre 52010 runs seven days on a full wind. A copy movement with a 40 hour reserve stops in under two days on a desk.
- Subdial layout. The 7 day model has small seconds at 9 o'clock and a power reserve indicator at 3 o'clock.
- Beat rate. The calibre 82200 runs at 28,800 vibrations per hour, or 4 Hz.
- Case thickness. The 40 mm model measures about 12.3 mm. Copies run thicker because the case holds a different movement and a spacer ring.
- Engraving. Real casebacks carry sharp reference and serial numbers. Copies show shallow stamping or laser marks.
Legal Status in the United States
Counterfeit watches carry a real trademark, so they are illegal to import and to sell in the US. CBP can seize and destroy shipments, and it publishes seizure totals each year. Sellers face civil damages under the Lanham Act and criminal charges under 18 U.S.C. 2320. A personal order can be seized at the border.
Price Signals
A new IWC Portugieser Automatic sells in the US for about $13,000 to $25,000, based on metal and model. Replica listings run from $150 to $600. A price gap of that size is the clearest sign of a copy.
What to Ask Before You Buy
- The full reference number, with the IW prefix.
- The movement name and jewel count.
- Case diameter and thickness in millimeters.
- Return policy and payment method.
- Photos of the caseback and the crown.
Limits of This Guide
No IWC reference matches Portugieser Automatic 31. This guide describes the real line and the labels sellers use. It does not confirm that one product exists or works as listed.