Core buying advice
If you are searching for a fake IW371407, stop and consider the risks. Counterfeit IWC watches are illegal to import and sell in the US, and they often use low-grade materials, unreliable movements, and no service support. The better path is to buy a genuine IW371407 from an authorized dealer or a trusted pre-owned seller with verifiable papers. If you already own a suspected fake, have it inspected by a qualified watchmaker before you spend more.
What to look for in a genuine IW371407
Case and crystal
The genuine IW371407 has a stainless steel case with precise brushing and polishing. The lugs should be even, the bezel should sit flush, and the crown should operate with firm clicks. The crystal is domed sapphire with anti-reflective coating. Fakes often show wavy reflections, uneven polishing, or a crown that feels loose.
Dial and hands
Genuine dials use applied indices, crisp printing, and correct subdial spacing. The chronograph hands should reset to zero with no drift. Fake dials often have flat printing, misaligned subdials, or a date window with the wrong font. Compare the dial color and texture to official photos from IWC.
Movement
The IW371407 uses an IWC-modified chronograph movement based on the Valjoux 7750 family, known as calibre 79350. Genuine movements show perlage, Geneva stripes, and engraved rotors. Fakes often use a stock 7750 or a Chinese clone with no finishing. A watchmaker can verify the movement through the caseback or by opening the watch.
Papers and serial numbers
Genuine watches come with a warranty card, manual, and box. The serial number on the caseback should match the paperwork. Fakes often have mismatched numbers, missing documents, or spelling errors on the card.
Parameter bands to check
- Case diameter: about 40.9 mm
- Lug width: 20 mm
- Water resistance: 30 m (3 bar)
- Movement: IWC calibre 79350, 28,800 vph, about 44 hours power reserve
- Crystal: domed sapphire, anti-reflective both sides
If a listing shows specs far outside these bands, treat it as a red flag.
Common pitfalls
- Buying from social media or marketplaces without authentication.
- Trusting a "Swiss made" label on a fake.
- Ignoring the cost of servicing a fake, which often cannot be repaired.
- Assuming a high price means authenticity.
- Skipping a return policy or a third-party inspection.
FAQ
Is it illegal to buy a fake IW371407 in the US?
Yes. Importing and selling counterfeit goods is illegal. Buying for personal use can also carry civil liability, and US Customs may seize the item.
Can a fake IW371407 be serviced?
Often no. Many fakes use non-standard parts. Even if a watchmaker agrees, the cost may exceed the watch value.
How can I verify a genuine IW371407?
Have a qualified watchmaker inspect the movement. Request a certificate from IWC. Buy from a seller with a return policy and verified references.