The fastest way to judge a fake IW323736 is to compare it against the genuine reference's published numbers before you look at a single photo. Diameter, thickness, lug width, movement calibre, water resistance and dial variant all come from IWC's own spec sheet, and a replica that misses those numbers will sit wrong on the wrist no matter how clean the logo looks. Ask the seller for those figures first. If they cannot answer with specifics, move on.

Start With the Genuine Reference Sheet

Pull the official listing for the reference and write down the case diameter, case thickness, lug-to-lug distance, lug width, crystal type, water resistance rating and movement family. That list becomes your checklist. A replica worth owning will land within about half a millimetre on diameter and within roughly one millimetre on thickness. Anything thicker than the genuine article usually means a cheap movement spacer or a case that was never modelled on the real watch.

Pay attention to which dial variant you are buying. The same reference number can ship with different dial colours, date placement or bracelet options, and sellers often mix photos from two versions in one listing. Ask for a photo of the exact watch you will receive, with the caseback visible.

What to Look For on the Watch Itself

Case and crown

  • Brushed surfaces on the case flanks should run in one direction and stop sharply at the polished bevel.
  • Lug tips should be rounded, not filed flat. Sharp lugs are the single most common tell on a cheap fake.
  • The crown should thread in smoothly with no grit and no wobble when pulled to the setting position.

Dial, hands and crystal

  • Printing should be crisp under magnification. Look for thickening, bleed or uneven spacing in the text.
  • Applied markers should sit level and reflect light as one piece. Glued-on markers that catch light in halves are a red flag.
  • Date font, date window position and window bevel must match the genuine version.
  • Sapphire with an anti-reflective coating on the inside should look nearly invisible at an angle. Bare sapphire gives a grey cast.

Bracelet and clasp

  • Link gaps should be even along the whole bracelet. Uneven gaps mean loose tolerances.
  • Better builds use screwed links and a machined clasp with a firm, centred closing action.
  • Check that the end links meet the lugs with no visible gap and no overhang.

Movement and caseback

  • Ask which movement is inside. A decorated Japanese automatic or a Swiss-clone automatic is a reasonable expectation at the top of the replica market.
  • Request a timegrapher reading or a rate figure. Expect roughly 10 to 20 seconds a day out of the box, and budget for a regulation service.
  • Caseback engraving should be deep and even, not laser-etched and shallow, and reference numbers should match the front of the watch.

Parameter Bands Worth Checking

  • Case diameter: within 0.5 mm of the genuine figure.
  • Thickness: within 1 mm. Over 1.5 mm thicker is a hard pass.
  • Lug width: exact, because straps and aftermarket bracelets depend on it.
  • Water resistance: assume splash resistance only unless a pressure test is documented. A stamped depth rating on the caseback proves nothing.
  • Weight: a steel replica should feel close to the genuine article. Noticeably light usually means hollow links or a thin case.
  • Lume: charge it under a lamp for 30 seconds. Weak, patchy or fast-fading glow is common on budget builds.

Pitfalls That Show Up in Cheap Builds

  • Stock catalogue photos used as quality control images, so what arrives is not what you saw.
  • Plated finishes sold as solid steel. Plating wears through at the clasp and caseback first.
  • Wrong date font or a date wheel that does not centre in the window.
  • Mineral glass advertised as sapphire.
  • Bracelet screws with no thread lock, which back out and vanish within weeks.
  • No returns policy and no after-sales service, which turns a small defect into a total loss.

FAQ

How can I tell a fake IW323736 from the genuine article?

Measure the case and check the movement. Genuine watches hold tight tolerances on diameter, thickness and lug width, and the movement finishing and engraving are consistent inside. Replicas usually fail on thickness, lug shape or dial printing before anything else.

Is a high-end replica worth the extra money?

Yes, if the extra cost goes into the case, crystal, bracelet and movement rather than packaging. Those four parts are what you see and feel every day.

Can I swim with a replica?

Treat it as splash resistant unless a pressure test has been done and the crown and caseback gaskets were checked. Servicing and re-sealing is inexpensive compared with a flooded movement.

What should I ask a seller before paying?

Ask for the exact case dimensions, the movement inside, the crystal material and dated photos of the specific watch, including the caseback and clasp. A seller who answers all four is a safer bet than one who only sends marketing images.