Fake IW371432 watches exist, and they copy the IWC Portugieser Chronograph. Most pass a glance from across a table and fail as soon as you check dial printing, pusher feel, caseback engraving, or the movement behind the display back. This guide covers what the reference is, how replicas are built, and which checks settle the question.

What is the IWC IW371432?

IW371432 sits in IWC's Portugieser Chronograph line, the 3714 reference family. The watch is a two-register chronograph in a steel case of roughly 41 mm, with a 30-minute counter at 12 o'clock and running seconds at 6 o'clock.

Sub-numbers inside that family change dial color, hands, and strap, not the base design. That detail matters for fakes, because a factory needs to match one dial and one case shape to cover several genuine variants.

Early 3714 examples use caliber 79350, a Valjoux 7750 base that IWC reworked in Schaffhausen. Later references in the same line moved to IWC's in-house caliber 69355.

Why are replicas of this reference so common?

The Portugieser Chronograph is one of IWC's most recognizable designs, so a copy sells itself to anyone who knows the brand. The dial is also simple by chronograph standards. Few printed elements and no extra complications mean a factory can build a convincing face with basic equipment.

Years of demand for "1:1" copies pushed replica makers toward this exact shape. The result is a market with three separate tiers rather than one product.

What does "1:1 Swiss super clone" mean on a listing?

These are marketing terms, not certifications. "1:1" claims dimensional matching, "Swiss" suggests European parts, and "super clone" implies the highest replica tier. No independent body verifies any of it.

Use the labels as price signals only. A seller calling a watch a Swiss super clone tells you what they want for it, not what is inside it.

How to spot a fake IW371432

Dial printing and subdials

• Print quality: genuine printing has sharp stroke edges on the IWC and Schaffhausen text. Replicas show thick or fuzzy letters.
• Subdial placement: both registers should sit on the vertical center line at 12 and 6. Copies often sit a hair off center.
• Subdial texture: genuine dials use fine concentric snailing. Cheap copies print a flat ring or skip the texture.
• Hands: the leaf-shaped hands on a genuine watch have polished bevels that catch light in a clean line. Stamped replica hands show flat edges.

Crown, pushers, and case finishing

• Pusher action: a genuine chronograph pusher gives a firm, short click and resets in one snap. Fakes feel mushy, or they grind.
• Crown threads: the crown should screw down with light resistance and stop hard. Replicas cross-thread or spin past the stop.
• Case transitions: follow the line between brushed and polished surfaces. On fakes that line wanders.
• Fitting: mismatched lug holes, oversized spring bars, and a loose end link fit point to a copy.

Caseback and engraving

Engraving depth is the tell. Genuine casebacks have even depth, sharp inner corners, and the reference string that matches the exact variant. Fake casebacks often carry a generic stamp, a wrong font weight, or a serial number that does not pair with the movement number.

Check the reference and serial against IWC records. Ask the seller for the paperwork, then ask IWC or a service partner to confirm the pair.

The movement

Look through the sapphire back. A 7750 base shows a distinct rotor and an exposed cam system. A Chinese chronograph movement shows different bridge shapes, different screw heads, and often a decorated plate laid over the top.

Genuine IWC movements carry perlage, Geneva stripes, and blued screws with clean slots. Replicas use plated or painted parts that look bright under a lamp and dull in daylight.

Strap, buckle, and box

Genuine alligator straps have irregular scale patterns and taper in a set way. Replica straps are embossed calf leather with uniform scales and a stiff feel.

On the buckle, check engraving depth and pin shape. Boxes and papers are the easiest thing in the package to fake, so treat a full set as weak evidence on its own.

What do fake IW371432 watches cost?

Copies fall into three rough tiers. Quartz versions run about $30 to $80. Mid-tier automatic copies run about $150 to $400. Super clone versions with a decorated automatic movement run about $500 to $900.

Those are typical asking prices, not quality grades. A high price on a replica says nothing about how close it comes to the real watch.

Which parts of a replica fail first?

Water resistance goes first. Replica gaskets and caseback seals are not tested, so a swim or a shower can end the watch. Owners who test copies in water report fogging within minutes.

Anti-reflective coating comes next. Genuine IWC crystals have a coating that kills reflections from most angles. Copies show a blue or purple cast, or no coating at all.

Lume and timekeeping follow. Replica lume fades within an hour, and an unserviced movement drifts well outside chronometer range.

Genuine or fake: the checks that matter most

• Movement plates and finishing under the display back. This is the hardest detail to copy and the fastest tell.
• Pusher action and chronograph reset feel. Mid-tier copies rarely get this right.
• Reference and serial pairing, confirmed with IWC.
• Print and hand finishing under 10x magnification.

If you are buying a genuine IW371432

Buy from a seller who allows a return window long enough for an independent watchmaker to open the case. Photograph the movement before you pay.

Send the reference and serial to IWC client service or an authorized service center. A service quote confirms the movement type, the parts situation, and often the production era.

If the price sits far below market for a steel Portugieser Chronograph, treat that as a reason to slow down, not a bargain.

FAQ

Are fake IW371432 watches easy to spot?

From arm's length, a good copy can pass. In hand or under a loupe, the pusher action, movement finishing, and caseback engraving give it away.

Do replica IW371432 watches use a real Valjoux 7750?

A small number of higher-tier copies use a 7750 base, which makes the movement check harder. Most use a Chinese chronograph movement with different bridges and screw heads.

Will IWC service a fake IW371432?

No. IWC and its service partners do not work on counterfeit watches, and an independent watchmaker who takes the job will not have genuine IWC parts.

What is the safest way to check a used IW371432?

Have an independent watchmaker open the case, photograph the movement, and compare the serial to IWC records. Do that before the return window closes.

The short version

Fake IW371432 watches copy a dial that is simple enough to reproduce well, so decide with details a factory cannot fake. Judge the movement finishing, the pusher feel, and the IWC-confirmed serial pairing.