The replica IW371747 V6 is the build worth shortlisting first, provided you judge it on four concrete points instead of the number in the listing title. Those points are case profile and bezel geometry, dial printing and subdial placement, whether the chronograph behaves like a real chronograph, and how the finishing reads at arm's length. Version labels in this market mix genuine revision history with sales language, so the label tells you less than the watch on your wrist does.

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What the V6 label actually means

There is no governing body that assigns replica version numbers. A factory ships a build, buyers find faults, the factory revises the dial, the movement, or the case, and the next batch gets a higher number. V6 usually signals a sixth major revision of one workshop's IW371747, and in practice the jump from an earlier version tends to land on dial detail, hand shape, or a movement swap rather than on the case.

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Pros

  • Later revisions often fix the faults buyers complained about in earlier batches, particularly dial text weight and subdial spacing.
  • A version number gives you a shared reference point, so you can compare photos from different owners of the same build.
  • Higher-numbered builds usually have more documentation online, which makes verification easier before you commit.

Cons

  • The number is not a quality certificate. A sloppy V6 can be worse than a careful V4.
  • Sellers sometimes relabel older stock to match the current version.
  • Version language crowds out the details that matter, like movement type, crystal coating, and case finishing.

Ask two questions before you buy: which workshop produced the build, and what specifically changed from the previous version. A seller who cannot answer either is guessing.

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Confirm the reference before you compare builds

Treat IW371747 as a Portugieser Chronograph variant and verify its dial colour, case metal, and strap against reference data before you compare any replica. The Portugieser Chronograph family is built around a slim bezel, leaf hands, applied numerals, and twin counters at 12 and 6, and IWC lists the modern line with a 41 mm case and the in-house 69355 chronograph calibre. Differences between individual references sit in the dial and the finishing, and those are exactly the details a replica gets wrong.

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Case and bezel geometry

The Portugieser silhouette depends on a thin bezel and a case that sits flat rather than domed. Measure the replica against the published dimensions and look at the bezel width in profile shots.

Pros

  • Good builds keep the stepped caseband and the narrow bezel that give the watch its dress-watch proportions.
  • Lug curvature on the better versions suits a standard strap without gaps at the spring bars.

Cons

  • Cheaper builds thicken the case to fit a generic movement, which changes the profile more than any dial flaw.
  • Polished surfaces on low-tier examples often show soft edges where the original has crisp transitions.

Dial, hands, and printing

This is where a V6 build earns or loses its price. Check the subdial spacing first, then the printing.

Pros

  • Later revisions tend to correct the gap between the two counters, which is the most visible tell on earlier batches.
  • Leaf hands with the right width and a proper taper read correctly at normal viewing distance.
  • Applied numerals with clean bevels catch light the way the original does.

Cons

  • Printing can be too heavy, particularly on the minute track and the small text above the date aperture.
  • Anti-reflective coating is often weaker than the original, so the crystal throws reflections indoors.
  • Sunburst dial finishes vary between batches, and photos under shop lighting hide the difference.

Chronograph movement behaviour

Ask for a video of the chronograph running and resetting. The running seconds hand at 6 should sweep, the 30-minute counter at 12 should advance when the pusher is engaged, and the reset should snap both hands back to zero without hesitation. A stuttering sweep points to a low-beat movement, and a counter that never moves points to a decorative dial.

Pros

  • Builds with a working chronograph function feel like the watch they copy when you use the pushers.
  • Serviceable movements can be regulated, which matters if timekeeping drifts.

Cons

  • Module-based movements add height and can feel spongy at the pushers.
  • Water resistance is rarely tested, so treat the case as splash-resistant at best.

Who the V6 build suits

Buy it if you want the Portugieser chronograph look on the wrist, you accept that the movement is a copy rather than the 69355, and you are willing to inspect photos or video before paying. It suits a buyer who wants one dressy chronograph for occasional wear and does not plan to test water resistance or resale value. Skip it if you need documented service history, if you expect the watch to pass a close inspection by an authorised dealer, or if the version number is the only reason you are interested. On a replica of this type, the dial and the chronograph function decide the purchase, not the label.