What is IW371769?

IWC Schaffhausen does not list a reference IW371769 in its current or historical catalogs. The number combines parts of two real references: IW3716 (Portugieser Chronograph) and IW3717 (Pilot's Watch Chronograph). A watch sold as IW371769 is a replica or a listing error. If you see this reference, treat it as suspect.

Real IWC references with similar numbers

IW3717 Pilot's Watch Chronograph

The IW3717 has a 43mm steel case. It uses the IWC calibre 79320, a modified Valjoux 7750. Functions: hours, minutes, small seconds, chronograph, day and date. Power reserve is 44 hours. Water resistance is 6 bar. The case back is solid steel. Crystal is sapphire with anti-reflective coating. Production ran from 2016 to 2021. Retail price was $5,400 on a strap and $6,000 on a bracelet.

IW3716 Portugieser Chronograph

The IW3716 has a 41mm steel case. It uses the in-house calibre 69355. Functions: hours, minutes, small seconds, chronograph. No date. Power reserve is 46 hours. Water resistance is 3 bar. The case back is sapphire. Production started in 2020. Retail price is $7,600 on a strap.

Common fake traits for IW371769

  • Wrong case size. Fakes measure 42mm or 44mm, not 43mm or 41mm.
  • Date window in the wrong place. The IW3717 has a day-date at 3 o'clock. Many fakes show only a date or put it at 4:30.
  • Subdial spacing. On the IW3716, the subdials sit at 6 and 12. On the IW3717, they sit at 12 and 6 with a day-date at 3. Fakes misalign these.
  • Movement finish. Genuine IW3717 has a solid case back, so you cannot see the movement. If a seller shows a decorated rotor through a glass back, it is a fake.
  • Engraving. Genuine case backs have deep, crisp engraving. Fakes use laser etching that looks shallow.
  • Price. A genuine IW3717 costs $5,400 or more. A watch sold as IW371769 for $200 to $600 is a replica.

How to verify a watch

Check the reference number on IWC's official website. If the number does not appear, the watch is not genuine. Ask for the warranty card and box. Genuine IWC watches come with a warranty card that matches the reference and serial number. Look at the movement. IW3717 has a closed case back. IW3716 has a sapphire case back with a decorated in-house movement. Fake movements show rough finishing or plastic parts.

If you want a replica, buy from a seller who states the actual reference. Do not trust listings that use a made-up number like IW371769.