Quick answer
A replica IW329117 is a copy of an IWC watch from the IW3291 reference block. Most listings point to a 42 mm steel dive watch in the Aquatimer range. IWC does not list IW329117 in its current catalog, so treat the number as a seller code. Confirm which base model the watch copies before you pay. Good builds in this size class sell for $250 to $450. Budget builds sell for $80 to $150.
What the reference block covers
IWC numbers watches in blocks. The IW3291 block sits in the 42 mm sports range. Genuine models there use a steel case, a screw-down crown, an internal rotating dive bezel, and a rubber or steel strap. Replicas copy the outside shape. They do not copy the movement, the case finishing standard, or the service network.
Parts that set the price
Case and bracelet decide quality more than dial printing does. Check these five points.
- Case: 316L steel on most builds. 904L steel appears on top tiers. The gap shows in polish depth, not in weight.
- Crystal: sapphire with anti-reflective coating on both faces. Single-sided coating looks flat under light.
- Bezel: internal rotating ring driven by a second crown. On cheap builds the crown spins with no engagement, or the ring sticks.
- Dial: applied markers, printed text, lume color. Compare the date window position and font against photos of the genuine watch.
- Bracelet: end links that sit flush against the case. A gap of 1 mm or more is a tell.
Movements
Three movements show up in this size class. Miyota 9015: smooth sweep at 28,800 vph, audible rotor. Seiko NH35: 21,600 vph, hacking, hand winding, strong parts supply. Clone ETA 2824 or Sellita SW200: closest beat rate to the original, higher price, harder to service in the US. Ask for a photo of the movement before payment.
Checks before payment
- Request dated photos of the exact watch. Stock images prove nothing.
- Ask for a timegrapher reading. Plus or minus 10 seconds per day is normal for these movements.
- Confirm case diameter with calipers in the photo. Sellers ship 41 mm cases as 42 mm.
- Test the crown action. Screw-down threads should engage in two turns.
- Ask about pressure testing. Most sellers assemble without it.
Water resistance
Genuine dive watches in this class carry a 300 m rating. Replicas carry a claim, not a rating. Gaskets sit at the caseback and crown, but most sellers never test them. Treat any replica as splash resistant until a watchmaker runs a pressure test. ISO 6425 sets the divers' watch standard and requires a 100 m minimum plus pressure and corrosion tests. A replica holds no certificate against it.
What a replica cannot do
A replica has no warranty from IWC, no service history, and no resale value outside the replica market. A watchmaker may refuse to open it. Parts for clone movements come from the same sellers who sold the watch. Budget for a service or a movement swap every three to five years.