Short answer
A replica IWC IW323753 is a copy of a watch from IWC's Ingenieur Automatic line, reference prefix IW3237. Copies sell for $120 to $900. The case measures 40 mm across on most versions, which matches the genuine 40 mm. Movements differ by price tier: a 21,600 vph automatic at the low end, a 28,800 vph Seagull ST21 or Hangzhou 6460 in the middle. The genuine watch runs IWC caliber 30110. IWC's public catalogs do not list reference IW323753, so the dial color, case metal and production run tied to that exact number are not confirmed here. Ask IWC or an authorized dealer.
The genuine reference
IWC released the Ingenieur Automatic in 2013. The IW3237 family uses a 40 mm case, sapphire on the front and the back, and water resistance rated at 12 bar. Inside sits caliber 30110: 28,800 vph, 21 jewels, power reserve near 42 hours. Caliber 30110 is a modified ETA 2892-A2. The bracelet attaches at the case side, not at standard lugs. Suffixes in the family separate steel, titanium and ceramic versions plus dial colors. Suffix 753 does not appear in the catalogs cited in most online spec sheets, so treat any page that names it as unverified.
Case, dial and bracelet on copies
Case diameter: 40 mm. Thickness: 10 mm to 12 mm. The genuine case is about 10 mm thick, so a thick copy sits higher on the wrist. Case metal on copies is 316L steel, with black PVD or titanium-look coatings on some versions. Sellers describe those coatings as titanium; the metal under them is steel. Crystal: sapphire on the front, mineral or sapphire on the back. Genuine crystals carry anti-reflective coating on both faces.
Dial print varies. Check the position of the IWC logo above the date window, the numeral font, and date wheel alignment. On cheap copies the date sits off-center in the window. Lume on copies is weak and fades in under an hour. Hands on copies are often too wide at the base.
Bracelet: integrated steel with H-shaped links on most copies. The end link should meet the case with no step. Gaps of 0.5 mm or more are common on low-price units. Screw bars or push pins hold the links; cheap versions use friction pins that back out.
Movements
Three tiers show up on the market.
- Low: 21,600 vph automatic (Miyota 8215, DG2813). Some DG2813 versions do not hack. Rotor noise is audible.
- Mid: 28,800 vph Seagull ST21 or Hangzhou 6460. Both are ETA 2824 or 2892 derivatives. Hacking and hand winding work.
- Top: decorated 28,800 vph movement with IWC-style rotor engraving. It is still not caliber 30110, which has its own bridge shape and finishing.
Check the rate with a timegrapher app or a watchmaker. 28,800 vph equals 8 beats per second. A 21,600 vph movement shows 6 beats per second. Listen for 30 seconds and count.
Price bands
$120 to $250: 21,600 vph movement, mineral back crystal, hollow end links. $250 to $500: 28,800 vph movement, sapphire on both sides, solid end links. $500 to $900: decorated movement, closer case finishing, better lume. Prices move with exchange rates and shipping. A seller who quotes one price for all versions is mixing tiers.
Checks before you pay
- Ask for a photo of the movement with the caseback removed.
- Ask for the beat rate in writing.
- Measure the case with calipers on arrival. 40 mm, not 42 mm.
- Check that the date changes at midnight within 10 minutes. Quick-set should not bind.
- Check crown threads. Cross-threading shows on the first turn.
- Weigh the watch. A 40 mm steel case on a full bracelet lands near 150 g to 170 g.
Legal position
In the US, 18 U.S.C. § 2320 covers trafficking in counterfeit goods. Importing goods that carry a counterfeit mark falls under 19 U.S.C. § 1526, and Customs can seize the shipment. Resale is a separate offense from personal import. A replica is not a genuine IWC watch and carries no IWC warranty or service support.