Quick answer
A fake IW323737 is a watch sold as an IWC but made by a third party. IWC uses reference numbers in the format IW plus six digits. IW323737 fits that format, and listings that carry the number appear in the 3237 block used for IWC Ingenieur Automatic models. Replica sellers print real reference numbers on watches IWC did not make. Some listings use the terms first copy, AAA, or super clone for the same product. Confirm the number, the caseback engraving, and the serial with IWC or an authorized dealer before you pay.
What the number tells you
- Format: IW plus six digits. The first four digits mark the model block. The last digits mark the version.
- The caseback should carry the full reference, the case material, and a serial number.
- The serial on the caseback must match the serial on any card, booklet, or service paper.
- IWC service can confirm a serial against its records. Ask for that check in writing.
Checks that catch most replicas
- Dial print. Look at the brand name, the index edges, and the minute track under a loupe. Replica print shows soft edges and uneven spacing.
- Caseback engraving. Genuine IWC engraving has depth and clean inner corners. Laser etching sits flat and thin.
- Movement. Look at the rotor, the jewel count, and the finish on the bridges. Replica movements use undecorated blanks or plated copies.
- Date wheel. Check the font and the position inside the window. Replicas sit low or off center.
- Crown and threads. Turn the crown. Rough threads and a loose stem point to a copy.
- Bracelet and lugs. Check end-link fit and screw heads. Gaps and stripped slots are common on replicas.
Price signals
A steel IWC automatic sells in the four and five figure range, used and new. A listing priced far below current used listings on established marketplaces is not a bargain. Treat it as a replica until a service check proves otherwise. Replica sellers also copy boxes, cards, and booklets, so paperwork alone does not prove a watch is genuine.
Legal status in the United States
Counterfeit watches are illegal to import and to sell in the United States. U.S. Customs and Border Protection seizes counterfeit shipments. A seized watch is not returned and the buyer has no refund path. Trademark counterfeiting carries civil and criminal penalties. Buying a replica for personal use still carries the risk of seizure and loss of money.
Where buyers go wrong
Most bad purchases start with a photo set and no serial check. Ask for the serial, the reference, and a photo of the caseback and movement. Compare the reference on the watch to the reference in the listing text. A mismatch between the listing title and the caseback is a stop sign. If the seller refuses a third party authentication, walk away.