Short answer
"Replica IW371633" is a search phrase used by sellers of counterfeit watches. IW371633 is an IWC Schaffhausen reference number. No IWC watch is sold as a replica. The phrase describes a copy of an IWC Portugieser Chronograph. Nothing branded "replica IW371633" comes from IWC. In the United States, importing or selling it is illegal.
The genuine reference
IW371633 sits in the Portugieser Chronograph line. IWC launched the IW3716 family in 2020 with a 41 mm case and the in-house 69355 caliber. The exact dial color and case metal for IW371633 is not confirmed here. IWC does not publish a full public list of dial variants per reference.
Family specifications
- Case diameter: 41.0 mm
- Case height: 13.0 mm
- Movement: caliber 69355, automatic, column wheel chronograph
- Power reserve: 46 hours
- Frequency: 28,800 vibrations per hour, 4 Hz
- Functions: hours, minutes, small seconds at 6 o'clock, 30-minute counter at 12 o'clock
- Crystal: sapphire, front and case back
- Water resistance: 3 bar, 30 m
What copy listings describe
Listings for these copies reuse stock photos and the same reference number. Common claims:
- "Swiss movement" or "1:1 clone." In this price band the movement is a Chinese chronograph, often a Seagull ST19 or a copy of the Valjoux 7750 layout.
- Case size "40.9 mm" or "41 mm." Measured thickness runs past 13 mm on most samples.
- "Sapphire crystal." Some units ship with mineral glass.
- "Water resistant." Almost never pressure tested.
Prices on these listings run from about $80 to $500. No seller publishes a serial number that IWC records.
US law
18 U.S.C. § 2320 makes trafficking in counterfeit goods a federal crime. A first offense carries up to 10 years, a second up to 20 years, plus fines. Civil claims fall under the Lanham Act, 15 U.S.C. § 1114 and § 1125.
US Customs and Border Protection seizes counterfeit watches at the border. Under 19 C.F.R. § 133.23, an item with a counterfeit mark is subject to seizure and destruction. A traveler may bring one such article of each type in personal baggage for personal use. Mail and parcel shipments do not get that exemption. The buyer loses the money and the watch.
Other facts
- IWC service centers do not service counterfeit watches.
- Resale of a counterfeit watch breaks the same statutes.
- Second-hand marketplaces pull listings when the mark is identified.
How to verify a real one
- Check the reference against the IWC catalog.
- Ask for the warranty card and the IWC service record.
- Have a watchmaker open the case back. Caliber 69355 has a column wheel. Copies use a different layout.
Unknowns
The dial color and case metal of IW371633 are not verified in this guide. Movement photos from a single copy cannot be judged without a physical inspection.