Short answer
IW329069 is an IWC reference number. Public listings place it in the Aquatimer line, a dive watch family. A fake IW329069 is a watch sold under that reference number but not made by IWC. Two checks settle most cases: the movement beat rate and the case back engraving.
IWC does not publish a complete public archive of every reference. Confirm the exact spec of IW329069 with an IWC boutique or a printed catalog before you buy. A listing photo is not proof.
What the reference should be
Aquatimer references in the IW3290xx block use a 42 mm steel case, an internal rotating dive bezel, and a screw-down crown. Reported movement is the IWC calibre 30120, an automatic with 28,800 vibrations per hour (4 Hz) and about 42 hours of power reserve. Case back text includes the reference, the serial, and the maker name in concentric rings.
Numbers vary by variant. A dial color, a strap, or a limited run can change the last two digits. Verify IW329069 against IWC records, not against a similar reference.
Checks that expose a fake
- Beat rate. A real 30120 runs at 4 Hz. Most low-cost copies run at 3 Hz (21,600 vph) and the second hand looks hesitant.
- Case back. Laser engraving on a genuine case is crisp and even. Copies show shallow cuts, fuzzy edges, and wrong font weight.
- Bezel action. The internal bezel turns with a firm click and no wobble. Copies feel loose or gritty.
- Date font. IWC uses a set numeral shape. Copies use generic discs with thicker strokes.
- Lume. Genuine Super-LumiNova glows green or blue with an even coat. Copies glow weak and patchy.
- Weight. A 42 mm steel Aquatimer on a steel bracelet sits near 180 g. Copies run lighter.
- Crystal. Sapphire with double anti-reflective coating shows a faint blue or purple tint at an angle. Mineral glass shows none or a strong tint.
Serial and papers
Serial numbers sit on the case back. IWC can confirm a serial against its service records. A seller who refuses a serial photo, or who hides the last digits, gives you no way to check. Papers, a warranty card, and a box help, but copies of all three exist. Ask for the original purchase invoice with a dealer name.
Price signals
Genuine Aquatimer Automatic models trade in the low-to-mid four figures on the secondhand market, depending on condition and box set. A listing far below that range with a new claim is a warning. So is a price near retail from a seller with no history.
Terminology
Sellers use replica, copy, and fake for the same product. The words do not change the watch. If a listing says 1:1 clone or super clone, the item is not made by IWC.