A fake IW371471 is any watch sold as an IWC Portugieser Chronograph ref. IW371471 that did not leave the IWC factory. The reference belongs to the Portugieser Chronograph family, base reference IW3714, and the last two digits mark the dial, case metal, and strap combination.
What defines the IW371471?
The Portugieser Chronograph is a slim steel chronograph with a two-register dial. Its counters sit in a straight vertical line at 12 and 6 o'clock. That layout is the model's signature, and it is the hardest thing for a copy to get right.
- Case: stainless steel, about 40.9 mm wide
- Dial: two subdials in a vertical line, applied numerals, leaf-shaped hands
- Crystal: sapphire, coated on both sides to cut glare
- Movement: calibre 79350 on early examples, in-house 69355 on later ones
The "71" suffix points to one dial and case pairing inside the 3714 line. Two watches can share the base reference and still differ in metal, dial color, or strap, so match the full number against the papers.
How do you spot a fake IW371471?
Fakes fail in the details that cost money to reproduce: the subdial layout, the depth of the caseback engraving, and the feel of the pushers. Check those three before you look at anything else.
Do the subdials line up?
A real Portugieser Chronograph runs its two counters in a vertical stack. Many copies use a standard three-register chronograph movement, then hide the third counter or shift the layout. Look at the 12 and 6 positions from arm's length. If the counters sit off-center or drift toward the middle of the dial, the watch is not a 3714.
Dial printing, hands, and crystal
- Printing is crisp and level. Copies show thick, blurry, or uneven text.
- Hands are leaf-shaped with a bright polish. Copy hands look flat or gray.
- The crystal shows almost no reflection at an angle. Cheap sapphire and mineral glass flare.
- The date window, when fitted, sits at 3 o'clock and lines up with the dial ring.
Caseback, engraving, and movement
Reference numbers, case metal marks, and the calibre number are stamped into the back. On a real watch the letters have sharp edges and even depth. Copies show shallow, wide, or doubled engraving.
A genuine example carries a movement that matches its reference. Ask for a photo of the calibre marking, or have a watchmaker open the back. A seller who refuses that request is telling you something.
Pushers, crown, and weight
Press the chronograph pushers. Real ones move with a firm, short click and reset to zero every time. Copies feel mushy, stick, or send the hand past zero.
Weight is a rough guide, not proof. Steel cases and solid bracelets put a real Portugieser Chronograph in a narrow band, and a light copy often feels hollow in the hand.
Is a replica the same as a counterfeit?
No. A replica is sold as a replica, with the buyer told what it is and what it is not. A counterfeit is sold as a genuine IWC, with fake papers, a fake box, and a price that matches the real thing.
The IW371471 gets copied both ways. If you are buying, the word "replica" in a listing is a disclosure. If the seller claims factory origin, you are dealing with a counterfeit and with fraud.
What gets confused with the IW371471?
The 3714 line spans many dial and metal combinations, so two listings can carry the same base reference and still show different watches. Use the full number and the caseback to narrow it down.
Buyers also mix the Portugieser Chronograph with the Portugieser Automatic. The Automatic has no pushers and no counters at 12 and 6. Pushers on the side of the case settle that question fast.
What should you check before you buy?
- Match the full reference, not just "Portugieser Chronograph," against the IWC numbering.
- Ask for the serial, a caseback photo, and a movement photo in one message.
- Compare the dial layout against a known real example of that exact reference.
- Check the service history. A 79350-based watch needs servicing like any mechanical chronograph.
- Buy from a seller who offers a return window long enough for an independent inspection.
- Treat a price far below the market for that reference as a red flag, not a bargain.
Frequently asked questions
How much does a real IW371471 cost?
Prices move with dial variant, condition, and whether the box and papers are present. Look at completed sales on a marketplace that publishes final prices rather than asking prices, and compare like for like.
Does the IW371471 have a display caseback?
Classic 3714 examples use a solid steel back, while later Portugieser Chronograph references use a sapphire display back. Confirm the caseback style for your exact reference before you treat a display back as proof of anything.
Will IWC service a fake?
No. Manufacturers decline work on watches they did not produce, and they may hold the watch. A refused service request is one of the clearest signs that a watch is not genuine.
Can a watchmaker authenticate one?
Yes, and it is the cheapest insurance you can buy on a four-figure purchase. A qualified watchmaker checks the movement, the case finishing, and the engraving in minutes once the back is open.
Bottom line
Judge an IW371471 by the subdial layout, the engraving, and the movement, in that order. Anyone selling one should be able to show you all three without a fuss.