Short answer
A fake IW328075 is a counterfeit of an IWC Pilot's Watch Automatic 41. The real watch carries an IWC automatic caliber, a 41 mm steel case, a soft-iron inner cage for magnetic protection, and a serial number that matches its warranty card. No public database confirms an IWC reference number. The check runs through IWC service or an authorized dealer.
What the reference covers
IW328075 sits in the IWC Pilot's Watch Automatic family. Public spec sheets for this line list a 41 mm steel case, a sapphire crystal, a screw-down crown, and a display back on some versions. Confirm the exact dial, strap, and movement for IW328075 against IWC's own product page. Reference numbers change with dial color, bracelet type, and limited editions.
Movement checks
IWC fits its own caliber in this line. The automatic movement in the current Pilot's Watch Automatic 41 runs at 4 Hz, or 28,800 vibrations per hour, and holds about 120 hours of power reserve. Replicas use a Miyota 9015, a Seagull ST series, or an unbranded clone. Those movements run about 40 hours on a full wind. A timegrapher settles the question in one test. Check the rotor engraving, the bridge finish, and the jewel count. Real parts show clean stripes and sharp text. Replica parts show tool marks and soft edges.
Dial, hands, and date
Real IWC dials use applied numerals with polished edges and Super-LumiNova fills. Replica dials show thick paint, uneven lume, or numerals that sit flat on the surface. Look at the date window. The aperture on a real dial is cut clean, and the date font matches the rest of the printing. A seconds hand that stops short of the minute track, or printing that drifts off center, points to a copy. Compare lume color and glow time against a known real dial under the same light.
Case, case back, and engraving
Measure the case with calipers. This line runs near 41 mm wide and about 10.8 mm thick. Replica cases run 1 mm to 2 mm thicker. Read the case back text. Real engraving is deep, even, and spelled right, including the reference number, the serial, and Schaffhausen. Replicas use laser etching that sits shallow, with wrong font weights or one serial repeated across many listings. The soft-iron cage is another marker. A watchmaker can check for it. A replica skips the cage, so the movement gains time near a magnet.
Price and paperwork
US authorized dealer prices for the Pilot's Watch Automatic line run about $5,000 to $7,500. Used pieces with box and papers trade near $3,500 to $5,500. A new IW328075 listed at $400 is not a gray market bargain. It is a replica. Papers matter more than the box. A warranty card with a serial that matches the case back, plus a dated dealer stamp, is the baseline. Replica kits copy boxes well and copy cards poorly.
Six checks before you pay
- Ask for the reference and serial on the case back in a clear photo.
- Ask a watchmaker to open the back and photograph the movement.
- Time the power reserve from a full wind to a stop.
- Measure case width and thickness with calipers.
- Test magnetic shielding with a gauss meter at a watchmaker.
- Send the serial and reference to IWC service for verification.
What to do when the watch is fake
Stop the payment if the method allows a dispute. Credit cards and escrow services give a path. Bank wires and crypto do not. Report the listing to the platform and to the brand. In the US, importing counterfeit goods is illegal, and Customs can seize the shipment. Keep photos, messages, and the listing address for the report.