Quick answer
IWC does not publish a reference named IW329112. The number falls inside the IW3291xx block that IWC uses for the Pilot's Watch Automatic 36. Sellers of counterfeit watches use the number in product listings anyway. A fake IW329112 is a copy of a 36 mm IWC pilot watch, sold under labels such as 1:1, super clone and Swiss made.
What the genuine reference block covers
The IW3291xx family is the Pilot's Watch Automatic 36. Case: stainless steel, about 36 mm wide and 10 mm thick. Movement: IWC calibre 35111, based on the Sellita SW300-1, 25 jewels, 28,800 vph, about 42 hours of power reserve. Sapphire crystal with antireflective coating on both faces. Date window at 3 o'clock. Water resistance rated at 6 bar. Strap options are leather or a steel bracelet.
If a listing shows 41 mm or 43 mm and calls it IW329112, the case size is wrong for that block.
Fake tiers and price bands
- Low tier, $60 to $150. Mineral glass, printed dial, quartz or basic automatic, plated case.
- Mid tier, $180 to $350. Sapphire crystal, Chinese automatic such as a Miyota 9015 copy or a Seagull ST series, date font errors common.
- High tier, $400 to $750. Decorated ETA 2892 or Sellita SW300 clone, engraved caseback, correct 36 mm case, AR coating.
Checks used to grade a fake
- Case size. Measure it. A 36 mm pilot watch is small on an 18 cm wrist. Copies ship at 38 mm and 40 mm.
- Caseback engraving. Reference, serial, IWC and Schaffhausen text should sit in one plane and read under a loupe.
- Dial printing. The IWC logo and the Automatic line sit above the date. Copies smear serif edges.
- Date wheel. Font and alignment differ between tiers. Cheap copies sit high in the aperture.
- Crown. Signed crowns appear at higher tiers. Low tiers use a plain crown.
- Sapphire and AR coating. Blue or purple reflection on a sapphire crystal. Mineral glass shows no color shift.
- Movement. Ask for a photo of the movement with the caseback removed. Decorated bridges are common in the $400+ tier.
- Lume. Charge the dial under a lamp. Copies dim faster and glow in one color where the original uses two.
Movement facts that matter
The genuine calibre 35111 beats at 28,800 vph, or 4 Hz. Copies at $200 and under often use 21,600 vph movements, or 3 Hz. A stuttering seconds hand points to a low tier movement. A solid sweep at 8 ticks per second plus a decorated rotor points to the high tier.
Legal and shipping risk in the US
Importing a counterfeit watch into the United States violates 19 U.S.C. Section 1526. U.S. Customs and Border Protection can seize the package and send a notice. Trafficking in counterfeit goods carries criminal penalties under 18 U.S.C. Section 2320, including fines and prison time. Buyers get no warranty and no recourse. Sellers promise to reship seized orders. That promise is not enforceable in a US court.
How to confirm a genuine watch
Send the serial and reference to an IWC boutique or an authorized service center. Ask for a service estimate. Request the warranty card, the booklet and the box. Cross-check the case size and the movement number stamped on the movement. A movement photo with the correct IWC engraving is the strongest single check.
What is unknown
IWC's public catalog does not list IW329112. The number may belong to a regional edition, a discontinued run or a seller invention. Confirm the reference with IWC before you pay for any watch sold under that number.