IW938402 is not an IWC catalog reference
No IWC Schaffhausen model is published under reference IW938402. IWC numbers use the prefix IW plus six digits, and each one maps to a model listed by the brand. A search for IW938402 returns marketplace listings, not IWC pages. The number works as a seller label, not as a factory reference.
That alone does not prove the watch in a photo is counterfeit. It means the number cannot be checked against IWC records. Anyone who needs a verifiable reference should ask for the digits engraved on the caseback and compare them to the catalog.
How IWC numbering works
Examples include IW371401 for the Portugieser Chronograph and IW500114 for the Big Pilot. The first four digits mark the model family. The last two mark the dial, strap or metal variant. The 9384 block matches no published IWC family.
Why sellers use unmatched numbers
Some listings alter or drop digits to avoid brand takedown notices. Others copy a number from a different model. A number that returns no catalog page is a signal to slow down, not a verdict on the watch.
Checks before you pay
- Caseback photo. Look for the full IW reference, a serial number, and the words Swiss Made.
- Movement photo. Read the calibre number on the rotor or bridge.
- Dial text. Check the logo, the word Schaffhausen, and the model line.
- Case diameter and lug width, in millimeters, measured with calipers if possible.
- Papers. A warranty card should show the same reference and serial as the caseback.
- Price. An IWC automatic sells new in the low thousands of dollars. A price far under that points to a replica.
Three ways to settle it
- Search the exact IW number on the IWC site.
- Send a caseback photo to an IWC boutique and ask for a match.
- Have a watchmaker open the case and read the calibre stamp.
If a seller cannot supply a caseback photo or a calibre number, the reference stays unverified. Note that IW938402 is unknown in public IWC sources as of this writing, so no independent confirmation exists either way.