A fake IW371734 is a counterfeit watch sold under an IWC reference number, not a model that IWC itself produces. Genuine watches carrying that reference leave the factory with a defined movement, dial layout, and case finish, and copies rarely match all three at the same time. The useful way to judge a fake IW371734 is to check each detail against the real specification instead of trusting how the watch looks in a listing photo.
Why the Reference Number Matters
IWC reference numbers identify a specific combination of case size, dial color, hands, strap, and movement. A seller who calls a watch an IW371734 is claiming all of those attributes at once. Ask for clear photos of the caseback, the dial, and the movement, and compare them with the official specification for that reference. If a watch has the right dial but the wrong caseback engraving, or a chronograph layout that does not belong to the reference, the reference number is being used loosely.
Start With the Movement and Subdial Layout
The movement is the hardest part of a watch to copy well, and it leaves visible clues on the dial.
- Subdial positions: on a genuine automatic chronograph, the small counters sit where the movement places them. Many copies use a different base calibre or a quartz module, so the counters shift slightly or sit at a different distance from the center.
- Hand height: a genuine chronograph stacks its hands close to the dial. Cheap copies often show a visible gap between the hour hand and the dial surface.
- Pusher feel: genuine chronograph pushers have a short, crisp travel and reset cleanly. Copies often feel mushy, stick, or reset with a visible jump of the hands.
- Seconds sweep: a quartz fake ticks. An automatic chronograph sweeps, even if the sweep is fast.
Dial, Printing, and Hands
Print quality separates good copies from obvious ones. On a genuine dial, the brand name, the reference family text, and the minute track are sharp under magnification, with consistent line weight. On a fake IW371734, the printing often looks slightly thick, the numerals may sit unevenly, and the applied indices can be misaligned with the minute track. Check the date window as well: the font, the position, and the way the disc sits behind the aperture are all details that copy makers handle badly.
Case, Crystal, and Finishing
Look at the transition between brushed and polished surfaces. Genuine cases break cleanly between the two finishes; copies often blur the line or polish a surface that should be brushed. Sapphire crystals on genuine watches carry an anti-reflective coating that reduces glare at angles. Many fakes skip the coating or apply it to one side only, which shows up as a gray or milky reflection in photos.
Caseback Engravings and Markings
Caseback engraving is one of the fastest checks. Genuine engraving is cut into the metal with even depth. Fakes are frequently laser-etched, which leaves shallow, slightly frosted lettering. Compare the reference number, the serial number, and the case material markings with the specification, and check that the numbers are not reused across multiple listings from the same seller.
Box, Papers, and the Story Around the Watch
Papers and boxes are easy to fake, so treat them as supporting evidence rather than proof. Ask when and where the watch was bought, whether the warranty card is stamped by an authorized dealer, and whether the serial matches the paperwork. Vague answers, a price far below the market for that reference, and pressure to buy quickly are the same signals that appear in almost every counterfeit sale.
What Modern Copies Get Right
Higher-end copies, often marketed as super clones, reproduce case dimensions, dial color, and bracelet finishing well enough to pass a casual glance. They still fall short on movement finishing, engraving depth, crystal coating, and long-term reliability. That is why authentication should focus on parts a buyer can verify: the reference specification, the movement behavior, and the engraved markings. Buying a counterfeit also means no manufacturer service, no warranty, and legal risk in many jurisdictions.
A Practical Checklist
- Confirm the reference number against the official specification.
- Inspect the chronograph pushers and reset behavior.
- Magnify the dial printing and the applied indices.
- Compare the caseback engraving depth and serial number.
- Verify the crystal coating under angled light.
- Have a watchmaker open the case before you pay.
None of these checks requires special equipment beyond a loupe and a phone camera. Together they catch the large majority of fake IW371734 listings, and they cost far less than a mistake.