A fake IW371411 is a copy of the IWC Portugieser Chronograph. The genuine reference is a steel chronograph from the IWC 3714 family, about 41 mm across, with a sapphire crystal and IWC calibre 79350, a Valjoux 7750 base that IWC rebuilds and finishes. Copies sold as first copy, AAA, or super clone run from about $150 to $700. None contain an IWC movement. The reference stamp on the caseback is the easiest detail to copy, so it proves nothing on its own.
What the reference is
IW371411 is an IWC Portugieser Chronograph in stainless steel. The dial carries two counters: chronograph minutes at 12 and running seconds at 6, a layout that comes from the 7750 base. The case measures about 41 mm wide and about 12 mm thick. The genuine movement runs at 28,800 vibrations per hour, has 31 jewels, and holds about 44 hours of power. IWC finishes the plates, engraves the rotor with the Probus Scafusia seal, and marks the calibre number on the bridge. IWC does not publish one catalog page that lists every dial and strap variant built under this reference, so compare a candidate watch against dated photos of the exact version before you judge it.
Checks on the watch
- Caseback: look at engraving depth and font. Genuine marks are cut into the steel. Copies use shallow laser etching or a printed sticker.
- Movement: a display back shows the rotor, the IWC seal, and the calibre number. Copies show an unfinished Asian 7750 or a quartz blank.
- Chronograph: start and stop the timer. The 7750 base resets to zero in one snap. Copies drift or park off center.
- Pushers: genuine pushers have short, firm travel. Copies feel soft or grind.
- Case profile: measure width and lug to lug distance. Copies run 1 mm to 2 mm off and sit taller on the wrist.
- Dial print: check index alignment and the printing of Schaffhausen under magnification.
- Papers: box, warranty card, and serial number should agree. Copies often ship with a serial that appears on many other watches.
Prices
Genuine IW3714 series watches list near $8,000 in the US and trade used in the mid four figures, depending on dial and year. Replica listings sit far below that: about $80 to $250 for quartz and low-grade automatic copies, $150 to $400 for watches sold as first copy, and $400 to $700 for so-called super clones. Price tracks cosmetics, not legality or service support.
US legal status
Importing a counterfeit watch into the United States is prohibited under 19 U.S.C. 1526(e). CBP can seize the shipment and destroys most seized watches. Trafficking carries penalties under 18 U.S.C. 2320. A counterfeit watch has no IWC warranty, no IWC service, and no resale channel that will authenticate it.
What is not known
IWC does not publish production totals for IW371411, and the number of dial variants is not documented in public sources. Treat any listing that states a specific production count as unverified.