Quick answer

A fake IW328013 is a counterfeit copy of an IWC Pilot's Watch Automatic 41: steel case, black dial with white luminous numerals, and an in-house automatic movement. The fast test is price and paperwork. A genuine one changes hands used for several thousand dollars, so anything in the low hundreds is a copy. The slower test is the caseback. Reference and serial numbers, engraving depth and movement finish are where replicas give themselves away, even the good ones.

What the genuine IW328013 should look like

IWC builds this reference in its Pilot's Watch Automatic 41 line. The case is stainless steel, roughly 41mm, with a mix of brushed and polished surfaces, a screw-in crown, and a sapphire crystal with anti-reflective coating on both faces. The dial carries IWC's signature pilot layout: a triangle at 12, thick printed numerals, and a date window at 3.

Inside sits IWC's calibre 32111, an in-house automatic that the brand rates at about five days of power reserve. That long reserve is one of the reasons fakes are easy to catch once you open the back or simply watch how long the watch runs off the wrist.

If you are comparing a listing against the real thing, start with IWC's own reference page for the model and work down. Case size, lug width, dial options and strap choices are all published, and a seller whose watch disagrees with the spec sheet is not offering a rare variant. Rare variants come with documentation.

How to spot a fake IW328013

Modern copies of this reference are not the junk that flooded the market fifteen years ago. Many use a clone of a Swiss or Japanese automatic, decent sapphire, and applied lume. What they still cannot do is hold IWC's tolerances across a hundred small parts. So check the small parts.

Case and crown

Run a fingernail along the line where brushed meets polished. On a genuine case that line is crisp and straight. On a fake it wanders, or the brushing is coarse and points the wrong way. The crown should thread smoothly with no grit, and the IWC fish logo on its face should be stamped, not laser-etched flat. Crown guards and lugs should sit symmetrical to the naked eye.

Dial print and lume

Genuine dial text is printed thin and sharp under magnification. Copies tend to print slightly heavy, and the Schaffhausen line often sits a hair too low or crowds the date window. Look at the date wheel too: the font has to match IWC's, and the number should be centered in the aperture. Lume is another tell. Charge the dial for thirty seconds with a phone light, then compare the numerals to the hands. If the hands glow a different shade or fade much faster, the watch is not factory.

Caseback, serial and reference

On a solid caseback, the engraving is the whole game. Genuine engraving is deep, even, and crisp at the edges. A fake's is shallow and slightly rounded. Many fakes also get the numbers wrong: a reference that does not match the dial or strap the watch was sold with, a serial that reappears on other listings, or a serial stamped on a caseback meant for a different model. A seller who will not send a clear close-up of the caseback stamping is telling you something.

Movement

If the watch has a display back, the movement should be cleanly finished with Geneva stripes, polished or blued screws, and correct IWC markings. Copies often mix finishes or leave tool marks visible without a loupe. If the back is solid, you can still catch a fake by the winding feel and by timing it: a healthy 32111 keeps running for days, a cheap automatic dies inside forty hours.

Box, papers and price

Papers should list the same reference and serial as the case. The box should match the period of the watch. And the price should be uncomfortable. If a steel IWC pilot's watch is offered at a fifth of market value with a story about a quick sale, the story is the product.

Why super clone IW328013s still fail

I have handled enough of these to say the gap has narrowed on the outside and not on the inside. A good copy can survive a wrist shot. It cannot survive a service watchmaker, because the movement architecture and the finishing under the rotor are different. Nor will it fool IWC if you ever send it in. The service center will return it unrepaired.

What to ask a seller before you pay

• A close-up photo of the caseback with the reference and serial readable.
• The reference and serial from the warranty card, in writing.
• Whether the watch has been serviced, and by whom.
• Return terms in writing, plus a payment method with buyer protection.
• A short video of the seconds hand running and the date changing.

If you want a replica on purpose

Plenty of people buy a replica of this reference because they like the look and will not pay five figures for the real one. That is a choice, and it comes with honest trade-offs: the movement will need servicing sooner or not at all, resale value is close to zero, and any jeweler who opens it will know. Pay replica money for a replica. The problem is never the copy itself. The problem is a copy sold as genuine.