Short Answer

IW323750 appears in replica listings as an IWC Ingenieur automatic. IWC does not show that exact number in its current catalog, so treat it as a seller label until you confirm it against a factory source. Replica builds of this reference come from a small number of workshops in Guangzhou. Listings claim 40 mm to 42 mm cases, sapphire crystal, and an automatic movement. Prices run $280 to $520. Build quality tracks the factory, not the number in the product title.

What Listings Claim

  • Case: 40 mm to 42 mm steel, 11 mm to 13 mm thick
  • Lug width: 21 mm or 22 mm, batch dependent
  • Crystal: sapphire, anti-reflective coating on one or both faces
  • Water resistance: printed as 100 m or 120 m, with no test data
  • Bracelet: steel, screwed links or push pins
  • Caseback: engraved reference digits, sometimes stamped

Movements Used

Three movements cover most of this market. The Miyota 9015 is Japanese, runs at 28,800 vph, and stores about 42 hours of power. The Seagull ST2130 copies the ETA 2824-2 layout and runs at 28,800 vph. The Asian 2892 is thinner at about 3.6 mm and shows up in slim cases. Rate claims land at plus or minus 10 to 20 seconds per day. Ask the seller for a timegrapher photo with the serial visible.

Checks on Arrival

  1. Measure the case with calipers. Confirm the number against the listing.
  2. Check lug width with a gauge. A 1 mm gap breaks bracelet fit.
  3. Wind the crown 30 turns. Listen for grit.
  4. Set the date and watch the flip point. Date change at midnight is correct. Gradual creep is not.
  5. Inspect dial printing at 10x. Look for broken serifs and uneven lume plots.
  6. Check the crown guard shape against reference photos.
  7. Turn every bracelet screw. Loose screws fall out in weeks.
  8. Skip water contact. Gaskets on replica cases have no pressure test.

Red Flags

Refuse any deal with no QC photos. Refuse prices under $100, since movement cost alone exceeds that. Treat "Swiss made" dial print as marketing text. Ask which factory built the watch and which movement sits inside.

Service and Care

Plan a service at 2 to 3 years. A local watchmaker can clean an A2824 or ST2130 for $60 to $120. Gasket replacement adds $20 to $40. Keep the watch away from steam, pools, and salt water.

Import Rules

US Customs prohibits import of counterfeit watches. Shipments can be seized and destroyed. Selling a counterfeit with a protected trademark exposes the seller to civil claims.