Quick answer
A replica IW328097 copies the IWC Pilot's Watch Automatic 41. Judge the copy on four points: case size and profile, dial printing and lume, the date wheel font and alignment, and the movement inside. Most weak copies fail on case thickness and date print, not on the dial color. A good copy measures 41 mm across, sits close to the genuine height, and carries a Miyota 9015, a Sellita SW200-1, or a decorated clone with a smooth sweep.
The genuine reference runs IWC calibre 32111 with a five-day power reserve and a 10 bar rating, so a copy with a 40-hour movement is a different animal. Expect that gap and price the watch accordingly.
Prerequisites
- Calipers or a ruler with millimeter marks
- A 10x loupe
- Photos of the genuine dial, caseback, and crown at high resolution
- A UV light for lume testing
Step-by-step inspection
- Measure the case across the bezel without the crown. The reading should land at 41 mm. Anything at 39 mm or 43 mm is a different model dressed up as this reference.
- Measure case thickness at the center of the caseback. A copy that reads more than a millimeter over the published figure will sit wrong on the wrist and will not take the genuine strap flush.
- Check the lug width. It should be 20 mm, and the spring bars should sit deep in the lugs with no rattle.
- Inspect the dial print under the loupe. The minute track, the IWC wordmark, and the "Automatic" line should be crisp with no bridging between letters. Fuzzy print is the fastest tell.
- Compare the date window. The cutout should be square with clean corners, and the numeral should sit centered with even margins on all four sides. Off-center date print is common on low-tier copies.
- Test the lume with a UV light, then in a dark room. The hands and the hour markers should glow at the same intensity and fade at the same rate. Mismatched glow means two different lume batches.
- Look at the case flanks and lugs. Brushed surfaces should run in one direction, and the polished bevel should be a sharp line, not a soft roll.
- Turn the crown. It should engage the threads or the stem without grit, and the position changes should click cleanly through winding, date, and hand-setting.
- Read the caseback engraving under the loupe. Reference numbers, the serial, and the caseback text should be laser-crisp and evenly spaced. Shallow, blurry engraving points to a stamped back.
- Time the sweep. A 28,800 vph movement gives eight beats per second and a smooth sweep. A 21,600 vph movement looks choppier and is a downgrade.
- Check the crystal. It should have an anti-reflective coating on the inside, and reflections should be muted blue or purple, not a flat white glare.
- Fit the strap and wear the watch for a day. Any sharp lug edge or crown bite shows up within an hour.
Movement options and what they mean
A Miyota 9015 copy is the value pick: thin, reliable, and cheap to service. A Sellita SW200-1 copy costs more and winds smoother. Decorated clone movements look closer to the genuine calibre through a display back, but this reference has a solid caseback, so decoration buys nothing you can see.
Red flags
- Seller photos that hide the caseback or the crown side
- Listings that quote a movement without naming a caliber
- Lume that glows green on the hands and blue on the markers
- Weight under roughly 70 grams on a steel bracelet, which signals a hollow case