The string "IW323720" follows the reference format IWC uses: the letters IW plus a block of digits. IWC lists no current model under that full number. The base group IW3237 covers a set of IWC watches, and the trailing digits mark a case metal and dial combination. A "fake IW323720" is a watch built by a third party and sold under that reference.
Answer in short
A fake IW323720 is not made by IWC. Buyers use the term for copies sold as first copy, clone, or mirror. Price for these copies runs from about $120 to $400. Genuine watches from the IW3237 group sell on the second-hand market for several thousand dollars.
What the reference format shows
IWC reference numbers start with IW and end with six digits. Sellers split the digits into a family code and a variant code. IW3237 marks the family. The last two digits point to the metal and the dial. IWC does not publish a full public code list for metal and dial pairs, so the exact build behind IW323720 is not confirmed here. A buyer should ask the seller for the case diameter, the movement number, and photos of the caseback.
What separates a first copy from a genuine watch
- Movement: IWC watches in this group use in-house or modified Swiss calibers. Copies use stock Chinese or Japanese automatic movements.
- Case finish: genuine cases are milled and brushed on a CNC line with tight tolerance. Copies show wider gaps at the lugs and softer edges.
- Dial print: IWC applies text with pad printing at high resolution. Copy dials show thicker strokes and uneven spacing.
- Caseback: the reference number, serial number, and model name are engraved. On copies the font differs and the serial repeats across units.
- Weight: steel cases from IWC weigh more than copies that use plated brass.
Price and market
Listings for a first copy IW323720 sit near $150 to $350. Sellers add $30 to $80 for a box and papers. Genuine IW3237 watches trade between $3,000 and $7,000 based on condition, metal, and service history. That gap drives the copy market.
Legal status in the US
US law bars the sale of counterfeit goods. 18 U.S.C. § 2320 covers trafficking in counterfeit goods and carries prison terms and fines. US Customs and Border Protection seizes counterfeit watches at ports and destroys them. A buyer who imports a copy risks seizure and no refund.
How to verify a reference before you buy
- Ask for the full reference and the serial.
- Send the number to an IWC boutique or service center.
- Compare case diameter and movement specs to published IWC data.
- Request a movement photo with the caseback removed.
No public IWC source confirms a model named IW323720. Treat any listing that uses the full string without a photo of the movement as unverified.