Short answer

IW329077 is not a reference number in IWC's published catalogs. The IW3290 block covers Pilot's Watch Automatic models, the 41 mm Pilot's Watch Automatic and Spitfire lines. Listings that use IW329077 describe a replica of a 41 mm Pilot's Watch Automatic, sold under an invented or mistyped number. If a seller cannot show that number on a caseback photo, the number carries no weight.

How IWC reference numbers work

An IWC reference starts with IW and six digits. The first four digits define the family. The last two define dial, strap and case metal. IW3290 is the Pilot's Watch Automatic 41 family. Published numbers in that block include IW329001, IW329002 and IW329003. A number outside the published range, such as IW329077, matches no catalog entry in public records.

Checks on the watch itself

  • Case: 41 mm diameter and 11.4 mm thick on the Pilot's Watch Automatic 41. Replicas run 0.5 mm to 1 mm thicker.
  • Movement: genuine watches use IWC calibre 32111 with 120 hours of power reserve. Replicas use a Miyota 9015 or a Seagull ST21 with about 40 hours.
  • Caseback: engraving is laser cut and shallow on fakes. Reference number, serial number and the IWC Schaffhausen name sit in a ring around the sapphire window.
  • Date wheel: the date font on a genuine watch matches the dial print. Replica date wheels are wider and sit off center.
  • Crystal: double anti-reflective coating on both faces from IWC. Fakes carry one coated face. The dial looks flat under a light at a low angle.
  • Lume: Super-LumiNova on hands and markers. Replicas glow green. The genuine article glows pale blue-white.

Price context

A new Pilot's Watch Automatic 41 lists at 5,900 to 6,600 USD depending on strap. Secondary market prices run 3,800 to 5,200 USD. Replica sellers list IW329077 style watches at 300 to 800 USD. A gap that size is the first signal.

What to ask a seller

  1. A photo of the caseback with the full reference number and serial number.
  2. A movement photo with the rotor visible.
  3. Box, warranty card and original receipt.
  4. Service history from an IWC authorized center.

An IWC boutique or an authorized service center can verify a serial number. IWC does not run a public serial lookup. Treat any number that fails a boutique check as unverified.