Short answer
A replica IW329147 is a copy of an IWC Aquatimer Automatic 42 mm dive watch. Good copies match the 42 mm case, the lug width, the crystal shape and the dial printing. Cheap copies miss the bezel feel, the crown guard profile and the date window cut. Common asking prices run from $250 to $550 for a mid tier build and $600 and up for a top tier build. Ask for dated photos of the exact unit before you pay.
What the genuine reference is
IWC groups the Aquatimer Automatic 42 mm under the IW3291 reference block. The published spec sheet lists caliber 30120, a 42 hour power reserve, a 42 mm steel case and 300 m water resistance. IWC issues separate reference numbers for dial, strap and bracelet variants, so confirm the dial color, the bezel insert and the strap type against the IWC product page before you compare a copy. The IW329147 number itself does not resolve to a public IWC listing in every market. Treat any dealer spec sheet as unverified until it matches the IWC page.
What replica makers get wrong
- Bezel action. The genuine SafeDive bezel moves with a clutch and stops in one direction. Copies often spin free or feel loose.
- Date font. The printing is too wide or too bold on low tier dials.
- Lume. Cheap copies use a thin coat that fades in minutes.
- Caseback engraving. Depth and line weight are shallow on budget cases.
- Bracelet end links. Gaps at the case are visible at arm's length.
- Crown threads. Rough threading shows up within weeks of use.
Movement options
Three movements show up in this model. The Miyota 9015 is a Japanese automatic with a 42 hour reserve. The Seagull ST2130 is a Chinese clone of the ETA 2824 layout. The decorated clone of caliber 30120 uses an Asian 2892 base with an added rotor plate. A decorated rotor does not change the base caliber. Ask the seller which base movement sits inside the case and ask for a photo of the movement with the caseback off.
Water resistance
Ignore any claim above 100 m without a pressure test report. ISO 6425 sets the test protocol and the marking rules for dive watches. A replica carries no ISO certification and no maker warranty. Wear a copy as a desk watch, not as dive gear.
QC checklist before payment
- Photo of the dial under direct light. Check the index alignment at 12 and 6.
- Photo of the crown and bezel edge. Check the knurling and the gaps.
- Photo of the caseback serial and engraving depth.
- Timegrapher shot. Rate inside plus or minus 15 seconds a day is acceptable.
- Confirm the strap or bracelet option in writing.
- Confirm the return window and the shipping method.
Legal status in the US
19 U.S.C. Section 1526 bars import and sale of goods that carry a counterfeit trademark. U.S. Customs and Border Protection seizes such shipments and can pursue the buyer. A replica is not a legal substitute for a genuine IWC watch.