The short answer
A counterfeit IW93885 fails on four checks: case finishing, dial printing, movement decoration, and paperwork. A genuine example shows deep and crisp caseback engraving, sharp transitions between brushed and polished surfaces, and a serial number that matches the warranty card and the box label. A fake shows shallow laser engraving, flat dial print, and a serial number that reappears across several listings. Run the ten checks below before money changes hands.
One term matters here. A replica sold as an authentic watch is a counterfeit, and the seller commits a misrepresentation. The authentication steps are the same either way.
Before you start
- A 10x jeweler loupe or a macro lens clip for your phone.
- A digital scale that reads to 0.1 g.
- The manufacturer spec sheet for reference IW93885: case size, thickness, weight, material, water resistance.
- Screenshots of the listing, including the serial number photo if one is shown.
- A written return policy from the seller before payment.
Authentication procedure
- Confirm the reference exists. Match IW93885 against the published catalog entry for case diameter, thickness, lug width, dial layout, and strap or bracelet type. A reference that returns no catalog match is a warning on its own.
- Weigh the watch on the digital scale and compare the result to the published figure for that case material. Counterfeits usually land several grams off because the case is thinner or the movement is lighter.
- Inspect the case flanks under the loupe. Genuine finishing keeps a hard, crisp line where brushing meets polishing. Fakes round that line off during hand polishing.
- Read the caseback engraving at an angle in raking light. Genuine engraving has uniform depth, clean inner walls, and a font that matches the brand's catalog photography. Laser-etched fakes look grey and shallow.
- Study the dial print. Brand text, model text, and depth ratings should be raised, glossy, and sharp at the edges. Dot-matrix texture or ink that sits flat on the surface is a fake indicator.
- Check the applied indices and hands. Bevels should be polished, lume fill should sit level with the frame, and hand lengths should reach the correct track. Uneven lume or blunt hand tips fail the check.
- Look at the crystal from a low angle. Genuine anti-reflective coating on both faces produces a faint blue or violet tint and very little reflection. A strong mirror effect or a purple cast on one side only points to a coated fake.
- View the movement, either through a display back or in a clear seller photo. Look for circular graining, beveled bridges, a signed rotor, and a jewel count that matches the spec. Plain brass plates and sticker-decorated rotors are common on fakes.
- Cross-match the serial number. The number on the caseback must match the number on the movement, the warranty card, and the box label. Ask the seller for a photo of all four in one frame.
- Compare the asking price against the current secondary market for that reference in that condition. A price far below market combined with no box and no papers is the single most reliable counterfeit signal.
Listing red flags
- Photos lifted from a dealer site or shot from the same three angles as another active listing.
- Serial number obscured, blurred, or described as "removed for privacy."
- Seller refuses a video call or an in-person inspection at a jeweler.
- Payment requested by wire, gift card, or peer-to-peer transfer with no recourse.
- Pressure to decide within hours, usually framed as another buyer waiting.
- Papers printed on the wrong stock, with mismatched fonts or a blank dealer stamp.
If the watch turns out to be counterfeit
- Stop wearing it and photograph every angle, the serial, the paperwork, and the packaging.
- Send the seller a written notice through the platform or email and state the specific defects you found.
- Open a dispute with the payment provider and attach the photos plus a written opinion from a watchmaker.
- Report the listing to the marketplace and, for imports, to the customs authority in your country.