The short answer

Treat any watch sold as an IW322046 as fake until the reference, the caseback, the movement, and the paperwork all line up. That sounds harsh, and it is meant to. The number follows IWC's reference format, which is exactly why it gets borrowed by sellers who are hoping you won't look anything up. Your first move is not squinting at the dial. It is confirming that the full reference exists in IWC's own catalogue. If it does not, stop there.

How IWC references work

IWC writes references as IW followed by a string of digits. The leading block identifies the family. The trailing digits narrow down the case metal, dial, and strap combination. IW322046 reads as family 3220 plus a two-digit variant code under that scheme.

What that means in practice: two watches can share a family number and look nothing alike, and two watches that look identical in photos can carry different variant codes. A seller who says "it's the 3220" has told you nothing useful. Ask for the complete number on the caseback and compare it to the reference on the warranty card. They should match each other and the listing.

The checks that catch most fakes

• Caseback engraving. Real IWC engraving is crisp and even in depth. Fakes are often laser-etched, so the letters look shallow or slightly soft under a loupe. Serial and reference should both be present.
• Dial printing. Study the logo and the Schaffhausen line. On a fake, letter spacing drifts, the logo sits a touch high or low, and the date aperture is framed more thickly than it should be.
• Applied markers and lume. Real indices are polished and set level. Fakes sit crooked, catch light differently from one another, and the lume can shift colour across the dial.
• Crystal. Many IWC watches carry anti-reflective coating on both surfaces, so the glass nearly vanishes at an angle. A heavy blue or purple glare usually points to coating on one side only.
• Crown. It should be signed, sit flush against the case, and wind with light, smooth resistance. Fakes feel gritty or spin with no feedback.
• Bracelet or strap fit. End links on a genuine bracelet meet the case with no gap. Aftermarket bracelets on fakes rarely do.

The movement is the hard stop

This is where nearly every fake gives itself up. IWC uses in-house calibres and heavily modified movements, finished with perlage, blued screws, and engraved rotors. Copies use a stock Miyota, a Seagull, or a generic ETA clone. The rotor engraving is the giveaway, every time. A watchmaker can open the case in five minutes and tell you what you're holding. Budget for that before you buy, not after.

Papers, box, and the price test

Counterfeiters have gotten good at boxes, but they still get small things wrong: booklet paper stock, the weight of the outer carton, the font on the warranty card, the way the serial is printed. None of that matters as much as the price, though. A "new" IWC at ten or fifteen percent of retail is not a bargain. Nobody is quietly liquidating Swiss watches at that level. If the number on the tag makes you feel lucky, you are the product.

Verification you can actually do

Ask the seller for the full reference and serial, then ask a watchmaker to open the case before money changes hands. Send the watch to an IWC service centre for a repair estimate if the seller will allow it. A service centre will not work on a counterfeit, and depending on where you are, you may not get the watch back once it has been identified. That risk is worth naming out loud before you ship anything.

Buy from an authorized dealer or a dealer with a written return policy. Pay with a method that offers chargeback. Skip sellers who only take bank transfer or crypto. IWC's most-copied lines are the Pilot's watches and the Ingenieur, so a 3220-family reference deserves the same scrutiny you would give a Submariner.

Bottom line

Confirm the reference exists. Match it to the card. Check the caseback, the dial, and the crystal. Then open the case. Do those things and you will avoid almost every fake sold under this number.