A fake IW323773 shows itself in four places: the case back engraving, the reference stamp between the lugs, the anti-reflective tint of the crystal, and the sharpness of the dial printing. On a genuine IWC reference these four details agree with each other and with the published specification. On a replica at least one of them fails, and budget copies fail several. Start with the case back, then move to the dial under magnification.
What is the IW323773 and why are replicas common?
The IW323773 is an IWC reference in the brand's stainless steel dive watch range, a category built around a rotating bezel, a screw-down crown, and a high water-resistance rating. That combination of a brushed case, a legible dial, and an in-house automatic movement makes it a frequent target for counterfeiters.
Secondary-market demand for IWC dive watches stays steady, so replica workshops produce the same reference in several quality tiers. Entry versions use plated cases and quartz movements. Top-tier versions copy the case dimensions to a fraction of a millimetre and fit a clone automatic movement.
How can you tell if an IW323773 is fake?
Case, bezel and crown
- Turn the bezel. A genuine dive bezel indexes with a firm click at every marker and has almost no back play. A loose, gritty, or free-spinning bezel points to a fake.
- Measure the case. Published dimensions for the reference are easy to find, and a replica that is 0.5 mm or more off will not sit the same on the wrist.
- Inspect the crown. It should thread smoothly through several full turns, sit flush against the case tube, and carry a deep, crisp logo stamp rather than a shallow etch.
Dial, hands and lume
- Check the printed text under 10x magnification. Genuine printing has hard edges and even spacing; replicas show bleed, uneven weight, or a wrong font.
- Look at the date window. It should be centred with the frame, and the numerals on the disc should match the dial font.
- Compare the lume. Applied markers sit level with no glue spill, and the lume colour on dial and hands matches under the same light.
Crystal and anti-reflective coating
IWC fits sapphire crystal with anti-reflective treatment on both faces, which produces a faint blue or violet cast at an angle. A plastic or mineral crystal, or one with no visible coating, is a clear sign of a fake. Tap the crystal with a fingernail: sapphire gives a dull click, while acrylic sounds hollow.
Case back, engraving and movement
The reference number appears on the case back and again between the lugs, and the two must match. Engraving on a genuine watch cuts into the metal with sharp edges; on a replica it often looks laser-etched and shallow. If the case back is transparent, look for signed rotor engraving, Geneva stripes, and circular graining on the plates, all of which cheap copies skip.
Bracelet, strap and clasp
A genuine bracelet uses solid links, screw bars, and a signed clasp with a tight folding action. Replicas frequently use pin-and-collar links, pressed clasps, and a logo that is stamped rather than raised. Weigh the watch: counterfeit cases are often lighter than the specification because the steel grade or thickness differs.
What separates a premium 1:1 replica from a cheap fake?
- Case accuracy: premium copies match the published diameter, thickness, and lug width, so genuine straps and bracelets fit.
- Crystal: a real sapphire crystal with double-sided anti-reflective coating instead of coated mineral glass.
- Movement: a clone automatic with a signed rotor and decorated bridges rather than an undecorated or quartz movement.
- Finish: brushed and polished surfaces that meet at a defined line, with no rounded edges on the lugs.
- Dial work: correct fonts, applied markers, and a date wheel that lines up with the window.
Which checks matter most before you buy?
Confirm the reference and serial match, then confirm the crystal is sapphire with visible coating. Ask for a straight-on dial photo and a macro shot of the case back engraving, since both are hard to fake in a photo. A seller who cannot supply those two images is a risk regardless of price tier.
FAQ
Does a fake IW323773 keep accurate time?
A clone automatic movement in a premium replica usually runs within roughly 10 to 20 seconds a day, which is acceptable for daily wear. Cheap quartz versions keep better time but feel wrong when you wind or set them.
Can a watchmaker spot a fake IW323773?
Yes. A watchmaker opens the case back and checks the movement finish, the balance assembly, and the engraving depth within a minute or two. That is the most reliable test available.
Do replica IW323773 watches come with box and papers?
Some sellers include a box, booklet, and card, but packaging proves nothing about the watch itself. Judge the reference stamp, crystal, dial printing, and movement rather than the accessories.