Short answer
IW938604 does not appear in IWC Schaffhausen's published reference list. IWC reference numbers start with the letters IW and carry six digits, and each listed number maps to a fixed case size, case metal, dial variant, and caliber. No public catalog, service document, or auction record shows IW938604. Listings that carry the number come from replica sellers. The number works as a seller SKU, not as a brand reference.
Why sellers use numbers like this
A six-digit code lets a seller track one variant across batches. It also sidesteps trademark filters that scan for the words IWC or Pilot. Two sellers can list the same physical watch under different codes. A code can also be a typo for a real reference in the IW37 or IW50 range.
Specs these listings claim
- Case: 41 mm to 43 mm, 316L stainless steel, brushed and polished mix
- Crystal: sapphire front, sapphire or mineral caseback
- Movement: automatic, 21,600 or 28,800 vibrations per hour
- Movement origin: Seagull, Hangzhou, or a clone of an ETA 2824 or 2892
- Water resistance: listed as 30 m to 100 m, often untested
- Weight: 90 g to 130 g on a steel bracelet
Genuine IWC watches in a similar size use in-house calibers from the 32000, 52000, or 69000 families. Those calibers carry a Pellaton winding system and a signed rotor. Photos of the movement decide the difference. Ask the seller for a clear picture of the balance wheel, the rotor engraving, and the jewel count markings.
Prices
Replica listings in this tier run $250 to $600. Genuine IWC chronographs retail from about $5,000 to $12,000 and up. A price far under $250 points to a quartz movement or a plated case. A price near $1,000 does not buy a genuine watch.
Checklist before you pay
- Ask for the caseback photo. Read the reference and serial numbers.
- Ask for a timegrapher reading: rate in seconds per day, amplitude, beat error.
- Ask for the weight in grams on a scale.
- Ask for a video of the second hand sweep and the date change.
- Ask which payment method covers a refund. Card and escrow hold more protection than bank transfer.
Legal status in the United States
Trafficking in counterfeit goods is a federal offense under 18 U.S.C. Section 2320. Penalties reach 10 years for a first offense and 20 years for a repeat offense. U.S. Customs and Border Protection seizes counterfeit shipments and can destroy them. Sales of counterfeit watches also expose sellers to civil suits from the trademark owner.
What is not known
There is no record of an IWC model numbered IW938604. No factory, caliber, or production year can be tied to it. Treat any spec sheet that uses the number as seller-written text, not manufacturer data.