A fake IW371473 gives itself away in four places: the movement, the caseback engraving, the spacing of the two subdials, and the hands. A genuine IWC Portugieser Chronograph from the 3714 family uses an approximately 41 mm stainless steel case, a bicompax dial with the 30-minute counter at 12 o'clock and running seconds at 6, and IWC calibre 79350 inside. Most fakes copy the outline well and fail on details you can check in under five minutes with good light and a loupe.
What is the IW371473, and why is it faked so often?
The IW371473 is a reference from the IWC Portugieser Chronograph line, a family produced in many dial and case variants under the 3714 numbering. Its large clean dial, applied numerals, leaf shaped hands, and two register chronograph layout make it easy to photograph and easy to clone. Because the design is symmetrical and uncluttered, a cheap replica can look convincing in a small listing photo.
How do you spot a fake IW371473?
Start with the dial layout, then work outward to the case and inward to the movement. Each step eliminates a tier of fakes.
- Subdial layout. Genuine watches place the 30-minute totalizer at 12, small seconds at 6, and the date at 3. Cheap fakes put the date at 4:30 or fit decorative subdials that never move.
- Chronograph function. Press the top pusher: the central chronograph seconds should start, the counter at 12 should advance, and the bottom pusher should reset with a crisp snap. Sticky pushers mean a quartz or low grade movement.
- Case size and thickness. Measure it. Replicas often run 1 to 2 mm thicker to fit a generic chronograph movement.
- Hands and numerals. Genuine hands are thin leaf shaped (feuille) and polished. Numerals are applied metal, not printed flat.
- Dial text. Check the IWC logo, "Schaffhausen", and the automatic line for font weight and spacing. Replica printing is often too bold, too large, or slightly curved.
- Caseback and movement. On exhibition back versions you should see a signed rotor, Geneva stripes and circular graining, plus clean engraving of the reference and serial. Replica engraving is shallow and laser flat.
What does the movement reveal?
The 3714 family runs on IWC calibre 79350, a heavily reworked Valjoux 7750 based chronograph with roughly 44 hours of power reserve and a 28,800 vph beat rate. Genuine watches show a slight rotor wobble when you shake them and a dense, smooth pusher feel. Replicas usually run a stock Asian 7750 or a quartz module, with shallow decoration and a rotor that spins freely and noisily.
What does "1:1 replica" actually mean for the IW371473?
- Budget tier: quartz, mineral glass, wrong case thickness, non-working subdials.
- Mid tier: Asian 7750 clone, correct layout, soft dial printing, thin plating on gold tone models.
- Top tier: correct dimensions, sapphire with anti reflective coating, working chronograph, cloned engravings. Still detectable by movement finish, date font, and serial consistency.
Even the best replica is a copy of a watch, not the watch. If a listing claims a genuine IW371473 at a fraction of market price, the movement check settles it in minutes.
Where do fake IW371473 watches appear?
Fakes concentrate in private sales, social media listings, and second hand marketplaces where nobody opens the case. Red flags include stock photos instead of dated images, refusal to send a movement or caseback photo, box and papers that do not match the reference, and pressure to pay outside a protected method.
Verification workflow
- Confirm the reference against IWC's own reference information, not a search result or a seller description.
- Request sharp photos of the dial, caseback, and movement through the display back.
- Have a watchmaker open the case and time the movement on a machine.
- Verify the serial and reference match IWC's records through an authorized service partner before you pay.
FAQ
Is the IW371473 a real IWC reference?
It belongs to the Portugieser Chronograph numbering family, which covers many dial and case variants. Reference numbers shift with dial color and case metal, so confirm the exact combination with an IWC service center rather than trusting a marketplace title.
Can a jeweler tell a fake IW371473 without opening it?
Often yes, through dial printing, hand finish, crystal clarity, and pusher feel. A watchmaker with a loupe and a timing machine can confirm in minutes once the caseback is off.
Are premium 1:1 replicas of the IW371473 worth buying?
They are copies and carry no manufacturer warranty or service history. Buyers who want collector value and factory service should buy genuine, while buyers who want the look should judge finish quality honestly and treat the watch as a cosmetic item.