Short answer

IW323757 is an IWC reference number. A replica IW323757 is a third-party copy of that watch. IWC does not make it, sell it, or supply parts for it. Replica prices for this reference sit between about $80 for a quartz build and about $450 for a build with a Swiss automatic movement and an anti-reflective sapphire crystal.

What the reference number tells you

IWC writes reference numbers as IW plus seven digits. Watches that share the first four digits share a case, a dial layout, and a movement family. The last digits mark the case metal and the strap or bracelet. A steel version on a leather strap and a steel version on a bracelet carry different full references.

I do not have a verified spec sheet for IW323757 here. Treat any seller spec table as unconfirmed until you match the diameter, thickness, and lug width against IWC's own listing for the same family.

Checks before you pay

  • Case diameter and thickness. Ask for caliper photos, not catalog numbers.
  • Lug width. A 1 mm error means aftermarket straps will not fit.
  • Crown. It should screw down, seat flush, and turn without grit.
  • Crystal. Sapphire with coating on both faces is the standard on the real watch. Coating scratches show as purple or blue streaks.
  • Dial printing. Compare the font weight of the brand text and the alignment of the marker at 12.
  • Date window. The disc should sit centered, with no gap at the edge.
  • Lume. Charge it under a lamp, then check it in a dark room. Weak glow is common on low-tier copies.
  • Clasp and end links. Push on the bracelet. Rattle and side play point to a stamped clasp.

Movement types in this price class

Miyota 9015: 28,800 vph, 24 jewels, about 42 hours of power reserve. Sellita SW200-1: 28,800 vph, 26 jewels, about 38 hours. ETA 2824-2: 28,800 vph, 25 jewels, about 38 hours. Chinese 2824 clones and the Seagull ST2130 appear in cheaper builds and run at 21,600 vph in some examples, which shows as a slower sweep of the seconds hand.

Ask the seller for the movement name in writing. A listing that says "Swiss movement" and nothing else tells you nothing.

Price bands

  • Under $100: quartz, mineral glass, stamped clasp, no real water sealing.
  • $150 to $250: Japanese automatic, sapphire crystal, steel bracelet.
  • $300 to $450: Swiss or Swiss-clone automatic, coated sapphire, better case finishing and tighter tolerances.

Service, water, and wear

Automatic movements need a clean and oil change every 5 to 7 years. Gaskets dry out and lose their seal. Do not swim with a replica unless a watchmaker has pressure-tested it. Most sellers quote water resistance numbers with no test behind them.

Red flags

  • Photos pulled from IWC's site instead of photos of the actual unit.
  • No return window and no payment protection.
  • Claims of "1:1 Swiss made" with no movement model listed.
  • Prices far below the band for the movement claimed.