A fake IW371734 is a counterfeit or replica version of the IWC Schaffhausen chronograph whose caseback carries the reference IW371734. The genuine watch is a stainless steel automatic chronograph from IWC's 37xx family, and the fakes split into two camps: cheap quartz lookalikes that share only the dial layout, and high grade replicas that copy the case, dial, hands, and crystal closely enough to fool a casual buyer.

What Does the IW371734 Reference Actually Identify?

IWC reference numbers follow a fixed pattern: IW plus six digits. The first blocks identify the model family and movement platform, while the final digits encode one exact combination of case material, dial color, and strap.

IW371734 therefore points to one specific configuration inside a chronograph family, not to a broad line of watches. That detail matters when you compare a watch to photos, because two IWC chronographs from the same family can share a case and still be different references.

What Does a Genuine IW371734 Look Like?

Case and dial

A genuine example uses a polished and brushed steel case in the 41 to 43 mm range with a screw-in or press-fit caseback. The crystal is sapphire with anti-reflective coating applied to both faces, which gives a faint blue or violet sheen under direct light.

The dial carries applied metal indices, printed minute track, and two chronograph registers plus a date aperture at 3 o'clock on most generations. Subdial hand length, date font, and lume color are consistent across every real example of one reference.

Movement

The engine is an automatic Swiss chronograph with roughly 44 to 46 hours of power reserve and a 28,800 vph beat rate. Pusher feel is crisp with a defined start, stop, and reset sequence, and the chronograph seconds hand snaps back to zero without drift.

How Do You Spot a Fake IW371734?

• Caseback engraving. Real reference and serial numbers are cut deep and crisp. Fakes are often laser-etched shallow with soft edges or the wrong font weight.
• Subdial spacing. Cheap copies built on generic chronograph movements push the 12 o'clock counter and date window slightly off position.
• Pusher and crown action. Mushy, gritty, or wobbly pushers point to a low grade movement.
• Crystal coating. A strong purple or rainbow tint across the whole crystal usually means aftermarket glass.
• Dial printing. Look for fuzzy text, uneven lume plots, and indices that sit proud of the dial.
• Weight and finish. Plated brass cases feel light and wear through at the lugs and caseback edges.
• Price and provenance. A discount of 40 percent or more against the market, with no box or papers, is the oldest red flag in the hobby.

What Do High Grade Replica IW371734 Watches Get Right?

Top tier replicas match the case profile, bezel step, dial texture, and bracelet taper well enough that the external look survives a hand inspection. The tells move inward: rotor engraving, movement finishing, jewel count, date wheel font, and the exact shade of the lume.

On the wrist, the difference shows in the winding feel and the chronograph reset. A clone mechanism often hesitates for a fraction of a second before the hand returns to 12.

How Much Does a Fake IW371734 Cost?

• Budget tier, roughly 30 to 90 USD. Quartz or low grade automatic, visibly wrong dial and caseback.
• Mid tier, roughly 120 to 200 USD. Decent case shape, weak movement, soft engraving.
• High grade tier, roughly 260 to 480 USD. Close external copy, clone automatic chronograph, correct dimensions.

FAQ

Is a replica IW371734 worth buying?

It depends on what you want. Buyers who want the look and the wrist presence for daily wear often accept the movement gap. Buyers who care about service history, resale, and collectability should stay with the genuine reference.

Can a jeweler tell a fake IW371734?

Yes. A watchmaker with the caseback open can identify a non-IWC movement, wrong jewel count, and missing finishing in under a minute. External inspection alone is far less reliable.

Can you resell a replica IW371734?

A replica is not a genuine IWC and carries no brand value. Selling it is legal only when it is clearly described as a replica, and shipping counterfeits across borders can lead to seizure and fines.

A replica IW371734 is a copy, never the real thing. Judge the watch on its own details, verify the reference engraving against IWC records when a seller claims authenticity, and never represent a replica as a genuine IWC product.