Short answer
A replica IW323707 copies the IWC reference IW3237, variant 07. Quality depends on the factory that built it, not on the listing photo. Most examples sell for $180 to $550. Above that range, ask for movement photos and a caseback photo before you pay. Confirm case size and dial color for variant 07 with the seller: IWC reference numbers repeat across case metals and dials, so the family code alone does not define the watch.
What the reference number tells you
IWC reference numbers use two parts: a four-digit family code and a two-digit variant. IW3237 is the family. 07 is the variant. The variant sets case metal, dial color and strap. A listing that says "IW323707" with stock images describes a family, not a watch.
Ask for four files: a straight-on dial photo, a caseback photo with the engraving in focus, a movement photo, and a short video with the seconds hand in frame.
Movement
Three movements appear in this price range.
- Asian clone of the ETA 2824-2. 28,800 vph, hacking, quickset date. Common at $180 to $350.
- Miyota 9015. 28,800 vph, thinner than the 2824. Japan-made. Common at $300 to $450.
- Swiss ETA 2824-2 or Sellita SW200, sometimes decorated. Ask for a rotor photo. A "Swiss movement" claim needs proof.
Check the beat rate with a slow-motion phone video. Count 8 beats per second for 28,800 vph. A movement at 21,600 vph shows 6 beats per second and sits in the lower grade.
Case and finishing
Most replicas use 316L stainless steel. 904L steel appears on high-end copies and adds cost. Check three points: the edge between brushed and polished surfaces, the lug edges, and the crown threads. Sharp lug edges and gritty crown threads are the two flaws that show up at the $200 level.
Measure the case with calipers if you can. A 0.5 mm difference from the genuine size changes how the watch sits on the wrist.
Dial, hands and crystal
Photograph the dial with a phone macro lens. Text edges should be clean. Applied indices should sit level, with no glue at the base. Lume color should match between dial and hands.
Sapphire with inner anti-reflective coating is standard on mid-tier copies. A blue tint at an angle means single-sided coating or none.
Water resistance
Replica water resistance ratings are not tested to ISO 6425 or to any other published standard. Gaskets vary by batch. Treat the watch as splash resistant. Do not swim with it.
Price tiers
- $80 to $150: mineral glass, 21,600 vph movement, stamped caseback. Skip.
- $180 to $350: sapphire, Asian 2824 clone, clean dial print. The common choice.
- $350 to $550: Miyota 9015 or a better-finished clone, AR coating, case geometry closer to the original.
- $550 and up: Swiss movement claims, 904L steel, decorated bridges. Verify with photos.
Red flags
- Stock photos, no images of the actual unit.
- "Swiss made" claims with no movement photo.
- A price under $100 for a watch described as sapphire and 28,800 vph.
- No return window in writing.
- Water resistance claims above 100 m with no test documents.
Questions to send the seller
- Which movement is inside, and can you send a photo of the rotor and balance wheel?
- Case diameter and thickness in millimeters?
- Caseback engraving photo, straight on?
- Return policy and warranty length in writing?
- Does the bracelet use screws or pins, and are spare links included?