A fake IW323776 gives itself away in three places fast: the caseback engraving, the crown action, and the heft of the case. Dial print, bracelet taper, and crystal clarity are slower tells that need a loupe and a reference photo. If you have a minute and no tools, start with those first three.
IWC reference numbers run IW plus a six digit code, and the official catalog is the list that counts. Look the reference up on IWC's site, note the case diameter, thickness, movement caliber, and water resistance, then measure the watch in front of you. Replicas rarely match all four at once.
Start with the three fast tells
- Caseback engraving. Genuine engraving is cut into the metal with crisp edges and even depth. On a fake it is laser etched, shallow, and fuzzy at the edges. Run a fingernail across it. Real engraving catches. Etching feels flat.
- Crown action. Screw the crown down and count the turns. A genuine crown seats in about two and a half to three turns with a firm stop. Fakes grind, bottom out early, or never feel seated at all.
- Weight. Steel IWC cases feel dense because the mid case and caseback are solid. A fake feels light and hollow, and the bracelet rattles when you shake it near your ear.
Dial, hands, and date window
Print is where cheap fakes lose. Look at the logo under a loupe. Genuine applied markers and printed text have sharp borders and consistent stroke width. Fakes show thick, bleeding edges, and the text sits a hair off center. The date window should be cut clean with square inner corners, and the date wheel should sit flush behind it. A sunken or tilted date wheel is a red flag. Lume color matters too. Genuine lume is an even cream or white. Fakes go yellow or green.
Movement and crown action
Ask for a movement photo before you buy anything online. Genuine IWC automatic movements show perlage, Geneva stripes, blued screws, and a signed rotor. Fakes use stock movements with a decorated rotor plate, and the engraving on that plate is the giveaway. It is shallow, generic, and the caliber does not match the catalog. If the seller will not send a photo of the movement with the caseback off, walk away.
Case, bracelet, and finishing
Run a finger along the lugs and the bracelet edges. Genuine brushing is straight and even, and polished surfaces meet brushed ones on a crisp line. Fakes blur that line, at the lug tops and at the clasp. Check the space between the end links and the case. Gaps of a millimeter or more are common on fakes. Check the crystal as well. Genuine sapphire shows a faint blue or purple edge reflection under a phone light. Cheap mineral glass shows none.
Box, papers, and price
Paperwork is easy to fake, so treat it as a soft signal and not proof. A price far below the market range for the reference is the strongest tell of all. Nobody sells a genuine watch at a third of market value to a stranger.
What to ask a seller
- Photos of the caseback, crown, clasp, and movement.
- The exact reference and caliber, in writing.
- Case diameter and thickness, measured.
- A return window with the conditions spelled out.
Get those four in writing and you remove most of the guesswork. No photo, no measurement, no return, no deal.