Short Answer
A replica IW328094 is a counterfeit copy of one specific IWC Schaffhausen reference, not of an entire model family. Judge it on the points you can measure or photograph: case diameter, thickness, lug width, dial layout, hand shape, crystal coating, movement type, and strap hardware. Every other claim, including movement grade and factory name, is unverified talk until you see it.
What to Prepare
- The official IWC spec page for IW328094, printed or saved
- Digital calipers that read to 0.01 mm
- A 10x loupe and a diffused light source
- A kitchen or postal scale accurate to 1 g
- Seller photos of the caseback, crown, and movement before payment
Evaluation Steps
- Lock the reference specs. Record case diameter, thickness, lug width, dial color, index style, and strap type from the manufacturer page. A copy built from a different IWC reference will fail the first measurement.
- Measure the case. Read the widest point across the case and the full depth from caseback to crystal. A thickness gap above 0.5 mm shows up in profile photos and changes how the watch sits on the wrist.
- Check lug width and spring bar fit. Measure the gap between the lugs at the case. If the reference calls for 20 mm and the copy takes 21 mm, the strap edges will sit proud of the case and the gap will be visible from the side.
- Inspect dial printing under the loupe. Compare letter height, spacing, and stroke weight against the spec photos. Look for stray dust under the crystal, uneven index feet, and lume that spreads past the applied markers.
- Compare hands and indices. Match hand length against the minute track and confirm the shape of each tip. Lume should fill the frame with a flat surface, not a dome or a smear.
- Examine the crystal. Sapphire should show an anti-reflective tint from the inside face. Coating on the outside surface scratches and is not standard on the reference.
- Work the crown through all positions. Winding should feel smooth, the date should advance in one direction, and the stem should lock with a clean click. Grinding or a loose stem points to a low-grade movement or a damaged keyless works.
- Open the caseback and identify the movement. Photograph the rotor and the bridge engraving. Compare the number of jewels, the beat rate, and the regulator style against the reference movement. A decorated rotor on an undecorated base is a common mismatch.
- Weigh the assembled watch. A full bracelet copy that comes in 20 g or more under spec uses hollow links, thin end links, or a lighter case alloy than the reference.
- Pressure-test only if you accept the risk. Do not swim with an untested copy. A leaking case gasket ruins the movement and voids any seller claim.
Red Flags
- No clear photo of the movement or the caseback
- Reference number quoted as a range rather than one number
- Spec sheet numbers that do not match the published case size
- Claims of "same factory" with no serial or batch evidence
- Pressure or urgency language in the sales reply
Legal and Practical Limits
Counterfeit watches carry trademarks owned by the brand, and US Customs and Border Protection can seize shipments at import, including single-piece orders. No copy comes with a manufacturer warranty, authorized service, or resale value. Treat the price as the full cost of the item, since parts, service, and repair will fall to an independent watchmaker who may refuse the job. Buyers who want a watch they can service, insure, and resell should compare the price of the copy against a used authentic reference before deciding.