Short answer
A replica IW371460 v3 is a copy of an IWC Portugieser Chronograph. The "v3" tag comes from the seller. IWC does not use version numbers like that. The tag marks the third batch of that copy in one seller's lineup. On its own, the tag does not say what the watch is made of or how accurate it is. Ask for the batch date, the movement name, and photos of the exact unit you will get.
The reference it copies
The IW371460 sits in the Portugieser Chronograph family. IWC lists the current Portugieser Chronograph at 41 mm across, 13.1 mm thick, 30 m water resistance, with calibre 69355 and a 46 hour power reserve. Earlier references in the same family used a modified Valjoux 7750 in a 40.9 mm case. Those two bases differ in case size, subdial spacing, and crown shape. Check which one the seller copied before you compare photos.
IWC reference suffixes encode dial and strap variants. IWC's site lists current models. Older codes such as IW371460 are not listed in full there. If a seller cannot show the dial color and strap that match the code, treat the model name as unconfirmed.
Replica IW371460 V6 Guide: First Copy Watches Online
What a v3 batch changes
- Dial print: marker thickness and the weight of the "Chronograph" and "Automatic" text.
- Subdial rings: spacing at 6 and 12, plus the depth of the recess.
- Hands: leaf hand length and bevel angle.
- Case: lug profile, crown size, and the depth of the caseback engraving.
- Movement: a step up from a plain A7750 to a decorated layout that copies the 69355.
Version numbers do not follow a shared schedule across sellers. A v3 from one seller can be older than a v2 from another. Compare photos and measurements, not labels.
Checks before you pay
- Case size: 41 mm for the newer base, 40.9 mm for the older one. Ask for caliper photos.
- Subdial hands: the hand at 12 should stop at the edge of its ring, not short of it.
- Date window: at 3 on both bases. The frame depth and the cut differ.
- Crystal: sapphire with a light dome on the 41 mm base.
- Caseback: solid steel on the older base, sapphire display on the 2020 base. Match the caseback to the base you asked for.
- Beat rate: 28,800 bph on A7750 based movements. Ask for a timegrapher photo.
- Weight: ask for a scale photo with the strap off.
Red flags
- Stock photos only, with no timestamp and no shot of the caseback.
- No movement name given, or a name that changes between messages.
- Price far under the batch norm for the same factory.
- "1:1" claims with no measurement table.
Legal and practical notes
A replica is a counterfeit. Sale and import are illegal in the US and the EU, and customs seizures do occur. Resale value is zero. Service is hard because movement parts and case parts do not swap with the genuine watch. Buy only with a payment method that offers a dispute path.