Quick Answer
IW323772 is an IWC reference number from the Aquatimer Automatic 2000 line, part of the IW3237 family. The number identifies one combination of case material, dial color, and strap. It does not point to a separate model. If you are searching "watch iw323772," you are most likely looking at a 44 mm dive watch rated to 2000 meters, built around the IWC caliber 30110, and you want to know whether the piece in front of you is real. Check the case back engraving first, then confirm that exact number against IWC records before you trust anything else.
What the Reference Covers
The IW3237 platform ran through the late 2000s and into the early 2010s. Several dials, materials, and strap options share the same base case and movement.
- Case: 44 mm, stainless steel or titanium depending on the variant
- Water resistance: 2000 m, the figure that gives the model its name
- Bezel: internal rotating dive bezel, adjusted by a second crown
- Movement: IWC caliber 30110, automatic, roughly 42 hours of power reserve
- Crystal: sapphire with anti-reflective coating on both faces
- Dial: black or blue, applied indices, Super-LumiNova fill
How to Verify a Watch Marked IW323772
- Read the full reference number on the case back and write down every digit.
- Compare that number with the IWC product archive or an authorized dealer's record.
- Measure the case across the crown guards. A genuine Aquatimer Automatic 2000 is 44 mm wide.
- Turn the internal bezel crown and confirm the ring moves in firm, indexed steps.
- Inspect the dial printing under a loupe. Text should be crisp with no bleeding at the edges.
- Ask a watchmaker to open the case and photograph the movement and its engraving.
- Match the movement serial number with the serial on the case back.
Common Problems on Copies
This reference gets copied often because the case shape is easy to machine and the dial is mostly text. The failures repeat in the same places. Bezel indices that do not line up at 12. A crown that turns with no resistance. A date window with the wrong magnification. Lume that fades within minutes instead of hours. Case back engraving that is shallow, uneven, or laser-etched rather than stamped. Genuine engraving on this model has depth you can feel with a fingernail. Ask the seller for a clear photo of the case back at an angle, where a shallow etch is easy to spot.
Movement Checks
Copies usually carry a Miyota, a Seagull, or a low-grade ETA clone. A real caliber 30110 shows clean rotor engraving, a signed oscillating weight, and finishing on the bridges. Sweep rate is a weak test on its own, so do not rely on the seconds hand alone. If the seller refuses an inspection by a watchmaker, treat the deal as closed.
Before You Buy
Ask for service history, original box and papers, and the name of any watchmaker who has worked on the piece. Parts for this generation are still available through IWC service centers, so a full service is a normal cost, not a red flag. A seller who cannot explain the service record is a bigger risk than a watch with a scratched case.