Buy the seller before you buy the watch. On a reference like the IW323721, the gap between a first copy that reads correctly on the wrist and one that looks off from across a room comes down to dial layout, case proportions, and bracelet taper, not the wording of the listing. Ask for dated photos of the exact unit you will receive, confirm which movement is inside, and check every stated measurement against IWC's own published specifications for that reference. A seller who will not photograph the actual watch, or who only shows catalog images, is not a seller you should pay.

What to look for on a first copy IW323721

  • Case geometry. Lugs, crown guards, and bezel edges should match the genuine profile. Rounded lug tips and a soft bezel edge are the two most common tells.
  • Dial layout. Date window position, marker shapes, and the spacing between printed text lines must line up with the reference. One misplaced line of text is easier to spot than a wrong movement.
  • Hands and lume. Hand length should reach the minute track. Lume should be applied evenly, sit level in the marker, and glow the correct color for the variant.
  • Bracelet. Check taper from the lug end to the clasp, screw or pin construction, and whether the clasp closes with a firm, centered click.
  • Crystal. Sapphire with internal anti-reflective coating is the baseline. A hazy or heavily blue-tinted crystal is a quick downgrade.

Parameter bands worth holding a seller to

  • Case diameter within roughly 0.5 mm of the genuine stated size, and lug width measured, not guessed.
  • Overall thickness within about 1 mm of the original, since caseback depth is where replicas cheat.
  • Weight within 10 to 15 percent of the genuine piece once the bracelet is sized.
  • Movement accuracy in the range of plus or minus 10 to 25 seconds per day, with a power reserve near 38 to 42 hours for a 2824-type automatic.
  • Movement type stated plainly: Japanese automatic, Swiss-pattern automatic, or a Chinese clone. Vague terms like "Swiss quality" mean nothing.

Pitfalls to avoid

  • Listings that use photos of a genuine watch, or photos borrowed from a different colorway of the same reference.
  • Water resistance claims that do not match the gasket and crown construction. Treat any first copy as splash resistant at most.
  • No quality control photos before shipping, and no clear return terms if the watch arrives with a crooked marker or a dead movement.
  • Ignoring import rules. Counterfeit watches can be seized in transit, and the buyer carries the loss on most terms.
  • Assuming a genuine bracelet or strap will fit without checking lug width and spring bar position first.

FAQ

Can I swim with a first copy IW323721?

Do not. Screw-down crowns and casebacks on replicas are often cosmetic. Keep it away from pools, showers, and salt water.

Which movement should I pick?

A Japanese automatic such as a Miyota 9015 is the safest choice for reliability. A 2824-pattern automatic gives smoother winding and easier service, but only if the seller names the actual maker.

How do I check the dial before paying?

Request a straight-on photo and a raking light photo. Straight-on shows marker and text alignment, raking light shows whether the applied markers sit flush or float above the dial.

Is buying one legal where I live?

Rules vary by country, and importing counterfeit goods is restricted in many markets, including the United States. Check your local law before ordering.