The short answer

If an IW371468 is being offered to you for a few hundred dollars, it is not an IWC. The reference sits inside the Portugieser Chronograph family, and steel examples of that family change hands for several thousand dollars on the used market. There is no genuine version of this watch at replica money. So the real question is which situation you are in: a counterfeit being passed off as the real thing, or a replica that everyone involved knows is a replica. Those two cases need different checks, and the sections below cover both.

What the reference should be

IW371468 belongs to the 3714 block of the Portugieser Chronograph. That generation is stainless steel, roughly 41mm across, about 12mm thick, with a sapphire crystal up front and a solid steel back. Inside is caliber 79350, an IWC-modified Valjoux 7750 running at 28,800 vibrations per hour with around 44 hours of reserve. The dial carries two registers: a 30-minute counter at 12 and running seconds at 6, both sitting on the vertical axis, with a date window at 3 on most dials. Water resistance is listed at 30 meters, and the strap is usually a signed leather with a signed tang or folding buckle.

Five things I check first

1. Subdial position and depth

The two registers must sit dead on the vertical line running through the crown. Fakes miss this more often than you would expect, usually because the case and dial were built around a movement with a different layout, so the rings end up shifted a degree or two or pushed off-center. Look at the subdial rings themselves as well. On a real dial they are recessed, with a fine snailed finish and a sharp edge. On a fake they tend to be flat, printed, or sunk too deep.

2. The caseback engraving

The back is solid steel and engraved with International Watch Co. over Schaffhausen, plus the reference, case number, movement number, material and water resistance. Genuine engraving is crisp, with clean shoulders and consistent letter spacing. Counterfeits usually look soft, shallow, or buffed, and the numbers often do not line up with the paperwork or with each other. A display back on a 3714 generation watch is a red flag on its own.

3. Case profile

The Portugieser is thin for a chronograph, with a slim bezel, long lugs that curve down, and a distinct step where the bezel meets the midcase. Fakes usually run thick and slab-sided because the case was cut to fit a stock movement. Sit the watch on a flat surface and look along the side. If it stands tall and flat, that matters more than any dial detail.

4. How the movement behaves

Winding feel, pusher click, and the sweep of the seconds hand tell you a lot in ten seconds. Caliber 79350 beats eight times per second, so the seconds hand glides. A ticking quartz hand means the watch is not a replica of this movement at all. Tip the watch gently from side to side and you should feel the rotor swing; the 7750 base has a noticeable wobble.

5. Strap, buckle and papers

Original straps are signed and the buckle is engraved. Papers mean a warranty card, and on recent IWC purchases, registration for the extended warranty. Serial numbers on the case, the card and the movement should agree. Sellers who cannot show a card but insist the watch is genuine are asking you to take the whole risk.

Fake means two different things

A counterfeit sold as genuine is fraud. Importing or selling counterfeit watches is a trademark matter, and customs in the US and EU seize shipments when they find them. A replica sold openly as a replica is a different transaction, and the checks above then become a way of judging how close the copy gets, not a way to prove provenance. If a seller blurs that line, treat it as a reason to walk away.

What the price tells you

Steel Portugieser Chronographs from this generation typically trade in the mid four to low five figures depending on dial, age, and whether box and papers are present. Anything advertised as genuine far below that range comes with a story, and the story is always the same: an inheritance, a gift, a relative abroad. A genuine watch at a fake price does not exist.

Quick checklist

  • Subdials at 12 and 6, aligned with the crown, properly recessed.
  • Applied numerals and sharp printing, nothing fuzzy under a loupe.
  • Solid engraved caseback with matching, crisp numbers.
  • Case under about 13mm thick with slim, curved lugs.
  • Smooth eight-beat sweep, firm pushers, rotor wobble.
  • Signed strap and buckle, warranty card, agreeing serials.
  • A price that matches the real market, not a bargain.