A replica of the IWC reference IW323718 should be judged on the case and the dial first, and on paperwork last. Before you pay, ask for macro photos of the dial printing, the crown, the bracelet end links, the clasp and the caseback, plus a timegrapher readout and a clear picture of the movement. Sellers who supply those images are normally working from real stock. Sellers who send factory renders, borrowed photos or a one-line description are not. The asking price should follow the movement and the finishing tier, never the logo on the dial.

What to look for on a fake IW323718

Case geometry and finishing

Confirm case diameter, thickness and lug width against the authentic reference data before you compare anything else. Replicas fail here first. A case that is 1 mm too thick wears differently and pushes the crystal higher off the wrist. Look at the transition between brushed and polished surfaces. On a good case those lines are crisp and straight, and the brushing runs in one direction. On a weak case the polish bleeds into the brushed zones and the lugs look soft.

Crystal and anti-reflective coating

Ask whether the crystal is sapphire and whether the AR coating sits on the inside. A blue or purple sheen on the outside means the coating will scratch. The edge of the crystal should be polished, not cloudy, and the crystal should sit flush with the bezel.

Dial, hands and lume

Dial printing is the fastest tell. Look at the thickness of each stroke, the spacing between letters, and whether the text sits level with the applied markers. Check the date window. The aperture should be sharp, the date wheel font should match the reference, and the date should sit centered. Hands should show beveled edges and clean polishing. Charge the lume under a light for 30 seconds and check it in a dark room. Uneven glow or a fast fade points to cheap paint.

Bracelet and clasp

End links should meet the case with no visible gap and no rattle. Check whether the links are screwed or pinned, how the bracelet tapers, and whether the clasp closes with a solid click. Engraving on the clasp should be deep and even, not laser printed on the surface.

Movement

Ask for the base caliber by name. Most replicas in this segment run a Miyota 9015, an ETA 2824-2, a Sellita SW200-1, or a clone of one of those. Request the timegrapher numbers: rate, amplitude and beat error. A reading between plus or minus 10 and 20 seconds per day is normal for this class. Amplitude above 250 degrees and beat error under 0.5 ms suggest a healthy movement.

Caseback and markings

Reference and serial engravings should be cut into the metal, not printed. If the reference has an exhibition caseback, compare the rotor decoration and the bridges with reference photos. Model text on the caseback should match the dial.

Parameter bands worth asking about

  • Case size: within about 0.5 mm of the authentic diameter and thickness.
  • Case material: 316L stainless steel at minimum. Ask if 904L is claimed, since it seldom is at replica pricing.
  • Movement: 28,800 vph automatic, hacking, with 38 to 42 hours of power reserve.
  • Accuracy: plus or minus 10 to 20 seconds per day out of the box.
  • Lume: C3 or BGW9, still readable after 30 to 60 seconds of charge.
  • Water resistance: 50 m tested as a floor, 100 m or more only with a pressure test report.
  • Weight: within roughly 10 percent of the authentic watch on the same bracelet.
  • Warranty: a dead-on-arrival window plus a movement guarantee measured in months, in writing.

Pitfalls that cost money

  • Swiss made printing on a movement that is a Chinese clone. Ask for a photo of the rotor and the balance.
  • Stock or borrowed photography. Request a timestamped photo of the exact watch.
  • Heavy photo editing that hides dial print errors or a misaligned date wheel.
  • No timegrapher data, or numbers that change between messages.
  • Sellers who cannot state case diameter, lug width or movement base.
  • Bargain pricing that points to a low-beat movement with a painted rotor.
  • Bracelet end link gaps and a clasp that flexes under light pressure.
  • No return policy, or one that excludes water damage and movement faults.

FAQ

Is a fake IW323718 worth buying?

Only if you accept that it is a replica with no collector value and no brand service support. Buy the tier that matches your use. For a daily wearer, pay for a named movement and a tested case. For an occasional piece that lives in a display box, a lower tier can be enough.

Can I judge quality from photos alone?

You can judge the dial, case finishing and bracelet fit. You cannot judge the movement or water resistance without a timegrapher reading, a movement photo and, for water resistance, a pressure test.

What movement should I expect?

Expect a third-party Swiss or Japanese automatic, or a close copy of one. You will not get the in-house caliber used in the authentic reference. That difference shows up in serviceability, not in how the watch looks on the wrist.

How long will it last?

With a named movement and sensible care, several years before a service is due. Keep it away from steam, rinse it with fresh water after contact with salt water, and have the gaskets checked before you swim with it.

Will a watchmaker service it?

Many brand service centers will not work on replicas, and some independent watchmakers decline as well. Ask before you buy, and confirm that the movement inside takes standard parts.

How do I check the lume?

Charge the dial under a bright light for 30 to 60 seconds, then move to a dark room. Readable glow for the first few minutes is a good sign. A dim glow that fades within a minute points to low-grade paint.

Practical note

A replica is not a genuine IWC and will not pass authentication at a brand service center. Sales and imports of counterfeit watches carry legal exposure in many countries, including customs seizure. Treat the purchase as a novelty or fashion item, keep resale expectations at zero, and do not present the watch as genuine to a buyer.