Short Answer
A replica IW371632 is a counterfeit copy of the IWC Portugieser Chronograph 41. IWC does not make it, does not sell it, and will not service it. Selling or importing one into the United States is a federal crime. A buyer gets no warranty, no parts support, and no resale market.
The Genuine Reference
Reference IW371632 sits in the IWC Portugieser Chronograph 41 family. The line uses a stainless steel case that measures 41 mm across and about 13 mm thick. Inside is the calibre 69355, an in-house automatic chronograph with a column wheel. Power reserve is 46 hours. Beat rate is 28,800 vibrations per hour, or 4 Hz. The crystal is sapphire on the front and the caseback. Water resistance is rated at 3 bar. Dial and strap options vary by reference. I could not confirm the exact dial and strap set for IW371632 from public spec sheets, so check the current IWC catalog before you compare a watch to it.
What Sellers Call These Watches
Listings use terms such as 1:1, super clone, AAA grade, and Swiss movement. No standards body defines those labels. Each seller applies them by choice. Photos in listings are often of a genuine watch, not the item shipped. Ask for a photo of the actual caseback and movement. Price alone does not prove grade. A $400 clone and a $90 clone can ship in the same box with the same paperwork.
US Law
Trademark counterfeiting is a criminal offense under 18 U.S.C. 2320. A first offense carries up to 10 years in prison and fines up to $2 million for an individual. Penalties rise for repeat offenses and for goods that threaten health or safety. US Customs and Border Protection can seize, forfeit, and destroy counterfeit merchandise at the border. Private import of a single counterfeit item is still prohibited. Brands file civil suits and criminal referrals. Watches seized at the border are not returned.
Tell Signs
- Movement: calibre 69355 has a column wheel and a 46-hour reserve. Many clones use a generic 7750-derived movement at a different beat rate.
- Caseback: engraving depth and font on clones differ from IWC tooling.
- Dial: subdial spacing, date window font, and hand finish are common tells.
- Crown: engraving is shallow, or the crown does not match the case profile.
- Papers: serial numbers that do not match between case, card, and box.
Service and Resale
IWC service centers do not work on counterfeit watches. Parts for the calibre 69355 come from IWC, so a watchmaker cannot order them for a clone that uses a different movement. Resale value is near zero. Auction houses and dealers reject counterfeit items. Insurance companies will not cover them.
Verification Steps
- Check the reference number against the IWC catalog.
- Ask for the original warranty card and box, then match serials.
- Have a watchmaker open the caseback and confirm the movement.
- Request a service record from an IWC service center, if one exists.
One note on scope: this page covers the reference and the law. It does not list sellers, prices, or sources.