A fake IW371433 is a counterfeit version of the IWC Portugieser Chronograph ref. 371433, and the tells sit in six places: subdial spacing, hand and numeral finish, the printed minute track, the lug and crystal fit, the movement under the display back, and the paperwork. Check those six and you can sort a genuine Portugieser from a copy in about a minute.
The real watch is a two-register chronograph with a wide, clean dial and a thin bezel. That plainness is why copies look close at arm's length and fall apart in the hand.
What Is the IWC IW371433?
The reference belongs to the IW3714 Portugieser Chronograph family, which IWC has built in stainless steel and precious metals since the late 1990s. The case runs 40.9 mm across. A case that wide with so little on the dial gives counterfeiters room to fake the shape and nowhere to hide on the details.
Features worth memorizing:
- Two subdials: chronograph minutes at 12 o'clock, small running seconds at 6 o'clock.
- Leaf-shaped (feuille) hands on the hours and minutes.
- Applied Arabic numerals at 12 and 6, applied bar indices elsewhere.
- Printed Arabic minute numerals around the outer edge of the dial.
- Chronograph pushers at 2 and 4, crown at 3.
- Date aperture at 3 on most versions.
What Are the Signs of a Fake IW371433?
1. Subdial Spacing
On a genuine dial the two subdials sit on a vertical line with equal margins, and their diameters match. Fake dials often shift the lower subdial off center or cut one subdial wider than the other. Lay a straight edge down the middle of the dial and look for drift.
2. Hands and Numerals
IWC polishes feuille hands to a mirror on the top facet and keeps the edges sharp. Copies show rounded tips, uneven facets, or a dull grey finish. The applied numerals on a real watch have tight inner corners and a deep bevel, while fakes look painted on or sit too flat against the dial.
3. The Printed Minute Track
The ring of small Arabic numerals around the dial edge should be sharp enough to read without a loupe. Cheap copies blur the print, crowd the numbers, or run the track at the wrong radius. Compare the gap between the outer track and the case edge against photos from a reference listing.
4. Case, Lugs, and Crystal
The lugs on a genuine 3714 taper to a defined point and meet the case with a crisp bevel. On fakes the lugs look thick, the polish is uneven, and the sapphire sits with a visible lip. Run a fingernail along the lug edge: a real one feels continuous, a copy catches.
5. Movement and Caseback
Where a display back is fitted, the movement should show a signed, decorated rotor with clean stripes or circular graining. Fakes show a plain rotor, harsh machining marks, or a bare base movement. The caseback engraving on the real watch has tight lettering and a deep cut; copies use the wrong font, a thin stamp, or the same case number on every unit a seller lists.
6. Box, Papers, and Serial
A full set includes a numbered warranty card, a matching box, and a case number that appears on both the caseback and the paperwork. Counterfeit sets often ship with a blank card and no dealer stamp. If the same case number shows up across several listings, stop there.
How Much Do Fake IW371433 Watches Cost?
Counterfeit IW371433 listings range from a small fraction of the real price up to a few hundred dollars, and the movement inside drives most of that gap. Dial printing and hand finish separate a cheap copy from a high-grade replica. A seller who will not post a clear photo of the movement has something to hide.
Which IW371433 Variants Get Faked Most?
The IW3714 family covers several dial colors, including silver, black, blue, and slate, plus editions with different hands and case metals. Each variant has one correct dial and hand combination. A copy that pairs a black dial with the subdial layout of a different reference is a clear red flag.
How Do You Buy With Fewer Risks?
- Ask for macro photos of the dial, the caseback, and the movement.
- Compare those photos against reference listings for the same variant.
- Check the case number and confirm it does not repeat on other listings.
- Pay with a method that allows a dispute if the watch does not match the photos.
- Budget for a service if the movement has no service history.
These steps apply to any IWC reference, not only the Portugieser Chronograph. Grey-market sellers and counterfeiters both stand or fall on photo quality.
FAQ
Is a fake IW371433 easy to spot in person?
Yes. Dial print, hand finish, and lug shape give it away once you know the layout. Photos hide flaws that your eyes and a loupe will catch.
What movement does the IW371433 use?
The 3714 generation runs on a calibre based on the Valjoux 7750, modified and finished by IWC. Later Portugieser Chronograph references moved to the in-house 69355. Confirm the movement against the exact reference before you buy.
What should the caseback of an IW371433 show?
Genuine casebacks carry the reference number, a case number, the maker's name, and Schaffhausen. The numeric ranges change by production year, so compare the case number with photos of other examples from the same period instead of trusting a seller's description.
Why is the IW371433 faked so often?
The dial is simple, the case is a plain round shape, and demand for the Portugieser name runs high. Those three things make it a target, much like the Rolex and Omega models that dominate the copy market.
Bottom Line
Match the dial, hands, lugs, movement, and paperwork against a known-good IW371433 before you spend. One mismatch is enough to walk away from a deal. Details you can check with your own eyes beat any claim a seller makes.