Short answer
A fake IW329078 is a counterfeit copy of an IWC Pilot's Watch reference. Copies sell from about $200 to $900. Genuine IW329078 watches sell for several thousand dollars on the secondary market. The checks that hold up are the caseback engraving, the dial print, the movement, and the documents that ship with the watch.
Reference facts
IW329078 sits in the IWC Pilot's Watch line. Case material, case size, strap, and movement differ by version and production year. IWC's catalogue and the warranty card are the source for the numbers that apply to one specific watch. Serial ranges and production totals for this reference are not public.
Checklist
- Caseback. Genuine engraving is cut into the metal with sharp edges and even depth. Copies use laser marking or shallow stamping. The reference number, case serial, and SWISS MADE sit on the same arc.
- Dial print. Letter spacing on the brand name and the reference text is tight. Under a loupe, replica print shows ragged edges and uneven ink height.
- Date wheel. Compare the date font and the window bevel against a photo from an authorized dealer. Copies use a generic disc with a flat font.
- Hands and lume. Genuine hands carry polished bevels and lume set level with the frame. Copies show chipped lume and dull edges.
- Crown and case tube. Thread engagement is smooth on a genuine watch. Copies cross-thread and stop short.
- Crystal. IWC sapphire carries anti-reflective coating on both faces. Copies show coating on one side or a purple tint.
- Movement. Ask for a caseback photo and a timing reading. Generic bases show in rotor decoration, screw heads, and jewel settings.
- Papers and box. Warranty card serial, caseback serial, and movement serial should match. Box print on copies is soft.
- Price. A seller offering a genuine IW329078 at 20 percent of market price is not selling a genuine watch.
What copies get right
High-end copies match case dimensions and weight within a few grams. They use sapphire and steel. Photographs alone cannot separate them. Physical inspection and a movement check are required.
Verification routes
Three options exist: an IWC boutique, an authorized dealer, or an IWC service center. Any of the three can confirm the reference and open the case. An independent watchmaker with a timing machine gives beat rate, amplitude, and rate in seconds per day. Those numbers identify a movement family, not a watch.
Market and legal notes, US
Counterfeit watches are illegal to import and sell in the United States. U.S. Customs and Border Protection can seize shipments. Buyers get no warranty support from IWC and no parts from the brand. Resale value is a fraction of the purchase price.