Most replica IW371768 watches get the general idea right and the details wrong. The IW371768 sits in the IWC Portugieser Chronograph family, a 41mm steel chrono with subdials at 12 and 6, no date, and a display back. If a seller's photos match those basics and the case thickness is honest, you are in reasonable territory. If the subdials sit anywhere else, walk away.
What the watch should look like
The Portugieser Chronograph is a dress chrono, not a sports watch. Slim bezel, long lugs, a dial that looks bigger than 41mm because the chapter ring runs close to the edge. Applied numerals at 12 and 6, leaf-shaped hands, a printed minute track. The two counters are a 30-minute totaliser at 12 and running seconds at 6. No date window. Ever.
A date aperture is the single most common error on cheap replicas of this reference. It is also the easiest thing to spot in a photo, so it tells you a lot about how carefully the rest was made.
Movement: the part that decides the price
The genuine uses an in-house calibre 69355, a column-wheel chrono with roughly 46 hours of reserve. Replicas fall into three groups, and each has a tell.
- Quartz. Cheap, thin, and the chrono seconds hand ticks instead of sweeping. Subdials are often decorative and do nothing.
- Valjoux-type automatic (A7750). Real chrono function, but the module stack usually adds thickness. Ask for a caliper measurement, not a claim.
- Decorated clone or copy calibre. Best tier. Correct subdial layout, engraved rotor, blued screws, perlage on the plates. Expect the caseback engraving to be crisp rather than etched and shallow.
Whatever the seller says, test the chrono. Start it, let it run a minute, reset it. The 30-minute hand should snap back to 12 and land exactly on the marker. A lazy reset is a sign of a cheap movement or a badly fitted hand.
Case, crystal and finishing checks
- Thickness close to the original. A 7750-based build often runs a millimetre or more fat.
- Sapphire with proper anti-reflective coating. Under a lamp the dial should stay readable, not wash out to grey.
- Caseback engraving depth. Laser-etched text looks flat and pale next to properly stamped or deep-engraved text.
- Lug finishing. Look for sharp edges where the lugs meet the case, and for brushed surfaces that stop in a straight line.
- Strap and buckle. Alligator-grain leather is normal at this level. Check the buckle engraving and whether the strap is stitched evenly.
Questions to ask before you pay
- What is the exact case diameter and thickness, measured with calipers?
- Which movement is inside, and do all three chrono functions work?
- Are the subdials functional or decorative?
- Can you send a short video with the chrono running and the caseback shown?
- What happens if it arrives dead or with a misaligned hand?
Anyone selling first copy watches online who cannot answer the first three questions is reselling stock they have never handled. That matters more than any photo.
Legal and practical note
Counterfeit watches are illegal to sell in the US, and shipments get seized by customs. There is no manufacturer warranty, no service network, and parts availability depends entirely on the seller. Budget for a watchmaker's inspection on arrival, and treat the purchase as a novelty, not an investment. If you want the real experience of a Portugieser, the used market for legitimate references is worth a look first.
Bottom line
Judge a replica IW371768 by the boring stuff: subdial placement, thickness, and a working chrono that resets cleanly. Nail those three and the watch photographs and wears well. Miss any of them and no amount of polishing will hide it.