Short answer
A fake copy IW329022 stands or falls on five points: case diameter and thickness, dial print and hand shape, the date wheel, the movement inside, and the crown and clasp. Measure the case with calipers, hold the dial against IWC's own reference photos, and ask the seller which movement gets installed. If any of those three checks fails, walk away.
What you need
- Digital calipers
- Bright diffused light plus a loupe or a phone macro lens
- IWC's reference page for IW329022 open on a second screen
- Seller photos of the caseback, crown and clasp before you commit
How to inspect a fake copy IW329022
- Confirm the reference string. Ask the seller for the exact engraving on the caseback. It should read IW329022. Builds that show a family number only, or mixed digits, use a generic case.
- Measure the case. Take a reading across the case at 3 and 9, then lug to lug, then thickness. Compare each number to the figure IWC publishes for the reference. A gap past 0.3 mm changes how the watch sits on the wrist.
- Read the dial print with the loupe. The brand name and the city line should sit level, with even letter spacing and sharp edges. Fuzzy or heavy print points to pad printing on a low grade dial.
- Study the hands against reference photos. Check the shape, the length past the minute track and the finish. Lume should fill each frame and sit level with the metal.
- Look at the date wheel. Confirm the window position, the date font and the background color. On many copies the font is wrong or the date sits off center in the window.
- Test the crown. It should screw down in a few smooth turns and sit flush with the case. Check the engraving on the crown face and the gasket seat.
- Review macro shots of the movement, or open the caseback with a proper tool. Compare the rotor engraving, the finishing and the jewel count against the caliber IWC lists for this reference.
- Weigh the watch on a kitchen scale. A steel case on a bracelet should land near the range owners report for the reference. A large shortfall means a hollow case or a thin bracelet.
- Inspect the bracelet and clasp. The clasp should be milled, signed, and close with a firm click. Count the links and check that the spring bars match the lug holes.
- Run the watch for 24 hours. Note the rate and the power reserve, then compare both to the specification of the movement the seller claims.
Tells that show up on weak builds
- Misaligned print or a logo that sits on a slanted line
- A date window with the wrong font or no magnification
- Caseback engraving that is shallow, or a serial number that repeats across listings
- Stamped clasps and folded link ends
- A rotor that spins loud or wobbles when you tilt the case
- Crown threads that catch or skip
Before you pay
Ask for a short video with the watch running, the crown pulled out and the date flipped. Confirm the return window in writing. A replica copy carries no manufacturer warranty and no authorized service, so any repair or regulation comes out of your pocket. Treat the price as the start of the cost, not the end.