Buy the dial, not the badge. On a fake IW371422, the details that expose it are rarely the logo: they are sub-dial spacing, case thickness, and hand finish. A replica that places the twin registers at 12 and 6 with the correct gap, holds a profile close to the genuine 12.3 mm, and mounts properly polished leaf hands will read as right on the wrist. Everything else, from the box to the paperwork, is secondary to those three checks. Judge the watch on a plain surface under daylight before you look at anything else.

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What separates a strong replica from a weak one

The genuine Portugieser chronograph is a dress watch wearing a stopwatch. It is thin, the bezel is narrow, and the dial is almost all open space. That combination is hard to copy because every proportion is visible. Weak replicas fail in predictable ways: the case grows taller to fit a modular chronograph, the minute track drifts inward, the numerals get thicker, and the hands lose their curve. Strong replicas start from the case and dial, then work outward. A correct case profile with a slightly imperfect movement is a better purchase than a decorated movement inside a case that sits 2 mm too tall.

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What to inspect before you commit

Dial and sub-dials

• Check the gap between the two sub-dials. It should look generous, not cramped. On thin-case replicas with a modified 7750, the registers often sit too close together or sit slightly low.
• Confirm the sub-dial at 6 is the running seconds and the one at 12 is the 30-minute counter. Swapped function is common on budget builds and it is the first thing an owner notices.
• Look at the numerals. They should be applied, with a clean edge and a slight step, not flat printed shapes with soft corners.
• Read the minute track. It should sit close to the outer edge with even spacing all the way around.
• Inspect the hands for a leaf shape with a visible center crease. Flat painted hands are a hard tell.

Case and crown

• Ask for the thickness measured with calipers, not a ruler. Anything past about 13 mm on this reference is a case that was built around the movement instead of the other way around.
• Check the lug profile. The lugs should curve down toward the wrist, not sit flat and slab-sided.
• Look at the crown. It should be small, signed, and sit slightly proud of the case band without looking oversized.
• Confirm the crystal is sapphire with a light dome, not flat mineral glass with a hard edge.

Movement and caseback

The genuine watch uses a slim automatic chronograph calibre. Most replicas use an Asian 7750 or a modified version of it. That is a workhorse movement, but it is thicker than the original, and the sub-dial positions can shift when a module is added. Ask for a short video of the chronograph starting, stopping, and resetting to zero. The reset should snap back cleanly. A creeping or bouncing reset hand means a worn or poorly assembled chronograph module. Check the caseback engraving depth and lettering quality as well.

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Strap and hardware

Strap quality is easy to upgrade, so treat it as a minor factor. What matters is the lug width and the taper. The strap should be 20 mm at the lugs and narrow toward the buckle. A strap that stays wide looks wrong against this case. The buckle should be thin and lightly signed.

Fake IW371422 vs Real IW371422 Comparison Review

Parameter bands worth checking

• Case diameter: roughly 40.8 to 41.0 mm.
• Case thickness: roughly 12.0 to 12.6 mm on a good build. Budget replicas often sit at 13.5 to 14.5 mm.
• Lug width: 20 mm.
• Sub-dial diameter: small, roughly one fifth of the dial width, with a clear gap between them.
• Crystal: domed sapphire, about 1 mm of edge visible above the bezel.

Common pitfalls

1. Buying from photos only. Insist on a wrist shot, a side profile shot, and a video of the chronograph running.
2. Accepting a swapped sub-dial layout because the dial color looks nice.
3. Paying extra for a decorated rotor on a movement that sits inside a too-thick case.
4. Ignoring the minute track and the printing weight, which are visible at arm's length.
5. Trusting the word of a seller who will not show the caseback in focus.

FAQ

Is a fake IW371422 worth buying?

Yes if the case profile and dial layout are correct and the chronograph works cleanly. If either fails, keep looking. The movement can be serviced, but a wrong case cannot.

How do I know the sub-dials work properly?

Ask for a video. The seconds hand at 6 should run constantly, and the hand at 12 should only move when the chronograph is engaged.

Can a replica take genuine parts?

Rarely. Case, dial, and hand dimensions differ enough that genuine parts do not drop in without modification. Assume no compatibility.

How do I check thickness without calipers?

Ask the seller to photograph the case next to a coin or a ruler. A side profile shot against a flat edge will show whether the case sits near 12 mm or closer to 14 mm.