Short answer

IW938437 is not an IWC reference number. IWC reference numbers carry the prefix IW plus six digits, for example IW371617 or IW500705. IW938437 does not match that pattern. The code comes from a seller catalog. It points to one listing on one replica site.

Review: Fake IW938437 Watch - Is It Worth the Price?

What the code is

Replica sellers name their products with internal stock codes. A code covers the model, the factory batch, the movement, and the colorway. Two sellers can list the same watch under two codes. One seller can reuse one code for a newer batch with a different movement.

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The same watch may appear as IW938437 on one site and as a plain model name on another. Codes are not shared across the replica market.

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What IWC references look like

  • Prefix IW, then six digits. Example: IW371617.
  • Case size and movement class feed into the digits.
  • IWC publishes its own references on its site and in printed catalogs.

If a listing shows an IW number that IWC does not publish, treat it as a seller code, not a factory reference.

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What to confirm before buying

  1. Case diameter in millimeters and case thickness.
  2. Movement type: automatic, quartz, or hand wound. Ask for the movement model number.
  3. Crystal material: sapphire or mineral glass.
  4. Case and bracelet material: 316L steel, 904L steel, or plated base metal.
  5. Water resistance rating in meters or ATM.
  6. Photos of the actual watch, not a stock image.
  7. Return window and who pays return shipping.

Sellers who will not answer items 1 through 5 in writing are a risk.

Legal status in the US

Counterfeit watches are illegal to import into the United States. US Customs and Border Protection can seize a shipment. A personal order does not create an exemption. A seller's shipping promise does not change the customs rule.

Red flags

  • A code with no photos of the real item.
  • A claim of "same factory" with no batch number.
  • Payment methods with no chargeback path, such as wire transfer or gift cards.
  • Prices far below the rest of the market for the stated movement.