Quick answer

A fake IW323776 gives itself away in four places: the movement, the caseback engraving, the dial print, and the crown action. Check those four before you look at box, papers, or price. If the seller refuses to let a watchmaker open the case, treat the watch as fake and walk away.

What you need before you start

  • A 10x jeweler's loupe or a macro lens for your phone
  • Digital calipers and a small scale that reads in grams
  • A watchmaker who can open a screw-back case without leaving tool marks
  • Clear photos of a known genuine IW323776 from a dealer listing
  • The full reference and serial number in writing from the seller

Step-by-step checks

  1. Ask the seller for a photo of the caseback, not a typed number, so you can read the reference and serial yourself.
  2. Weigh the watch and write the number down.
  3. Measure the case diameter and the lug width with calipers.
  4. Compare the weight and measurements against the published specs for the reference. Copies often run light or slightly oversized.
  5. Examine the dial print under 10x magnification. Genuine IWC print has sharp edges, even stroke width, and no ink bleed into the dial surface.
  6. Check the date window for centering and font shape.
  7. Inspect the hands under the loupe. Real hands have clean bevels and level lume fill.
  8. Turn the crown through several full winds and feel for grit, wobble, or a stem that sits crooked.
  9. Study the caseback engraving. Genuine engraving is cut into the metal with consistent depth, and the reference and serial sit in the layout IWC uses for that model.
  10. Open the case with a watchmaker and read the caliber stamp. The caliber must match the number IWC lists for the IW323776.
  11. Check the movement finish. Rotor engraving, jewel settings, and perlage on a genuine movement are clean and even.
  12. Run the case edges and lugs with a fingernail. Fakes often leave a sharp lip where the brushing meets the polish.
  13. Inspect the clasp or buckle markings and the end link fit if the watch comes on a bracelet.

Numbers, papers, and history

Send the reference and serial to an IWC service center and ask whether the two belong together and whether the record matches the model. A counterfeit seller will often supply a box, a warranty card, and a hang tag with numbers that do not line up with each other. Read every document twice and compare the digits, including the check digit placement.

Price check

Pull three current listings for the same reference in comparable condition. A price that sits 40 percent or more below the market is the strongest single signal of a fake. Genuine examples do not appear at half price because a seller is in a hurry.

Red flags that end the inspection

  • The seller will not allow an inspection by a watchmaker
  • The serial number appears on a different reference elsewhere online
  • The movement is a stock third-party caliber with no IWC marking
  • The dial print is fuzzy, thick, or misaligned at the markers
  • Payment is requested by wire, gift card, or crypto only

If you already bought a fake

Stop wearing the watch, photograph everything, and keep the packaging. Contact the seller in writing and ask for a refund. If the seller refuses, open a dispute through your payment provider and file a report with your local police and the national consumer protection agency. Notify IWC so the serial number enters their records.