A fake IW371447 is a counterfeit copy of the IWC Portugieser Chronograph reference IW371447, a 40.9 mm stainless steel chronograph with a slate grey dial and the IWC caliber 79350. Replicas reproduce the case shape, the 12 and 6 subdial layout and the IWC markings, but they use generic movements, softer case alloys and pad-printed dial text. No copy is recognized by IWC, none can be serviced by an authorized watchmaker, and none carries resale value.
What is the genuine IW371447?
The IW371447 sits in the Portugieser Chronograph family, a line IWC has built around a clean two-register dial since the late 1990s. It pairs a stainless steel case with a slate or anthracite dial, applied numerals at 12 and 6, and feuille hands.
- Case: stainless steel, 40.9 mm across, roughly 12.3 mm thick
- Dial: slate grey with applied indices, two subdials at 12 and 6
- Movement: caliber 79350, an IWC-modified Valjoux 7750 base with a 44-hour power reserve
- Crystal: sapphire with anti-reflective coating on both faces
- Strap: black alligator leather on a steel pin buckle or deployant clasp
- Water resistance: 3 bar
How do you tell a fake IW371447 from the real thing?
The movement and subdial behavior
On a genuine watch, the subdial at 12 counts chronograph minutes and the subdial at 6 runs the seconds. Most copies get this backwards, or the 12 o'clock hand sweeps like a seconds hand and resets with a visible stutter.
Where an exhibition caseback is fitted, look at rotor finishing, engraving depth and the spelling of the caliber markings. Replica movements show shallow laser etching, mismatched jewel counts and base plates that do not match caliber 79350 architecture.
Dial printing and hands
Genuine dial text is crisp, evenly spaced and applied or printed with sharp edges. Fakes show thicker lettering, a crooked line under the logo, and numerals that sit slightly off center.
Hands on a real IW371447 are polished to a mirror finish with clean bevels, while replica hands look flat, wider or slightly bent at the tips.
Case, caseback and crown
Authentic lugs are sharply angled with a satin finish that breaks cleanly at the polished edges. Counterfeits usually round those transitions and feel lighter in the hand than the roughly 80 gram steel case.
Engraved reference and serial numbers should be deep, centered and consistent with IWC's numbering. Shallow, sandblasted or misaligned engraving is a strong counterfeit signal.
Strap, buckle and packaging
Real alligator straps have irregular scale patterns and soft edges; replicas use embossed cowhide with repeating, uniform scales. Buckle stamping on copies is faint, and the supplied boxes and papers rarely match a genuine reference number.
How close are current super clone IW371447 watches?
High-end replicas now copy the case dimensions and dial layout closely enough to fool a photo. They still fail on movement architecture, because no replica factory produces a true caliber 79350 with the correct reversed chronograph train.
Weight, crown action, chronograph pusher feel and long-term reliability all fall short within months of daily wear.
What are the legal risks of buying a fake IW371447?
Counterfeit watches are illegal to import and sell in the United States, and shipments are routinely seized and destroyed by customs. Trafficking in counterfeit goods can be charged as a federal crime, and buyers have no warranty, no parts support and no recourse if the watch fails.
FAQ
Is a fake IW371447 worth the money?
No. You pay several hundred dollars for a watch that cannot be serviced by IWC, cannot be resold legally, and often fails within a year.
Can a watchmaker service a replica IWC?
Independent watchmakers sometimes work on the generic movement inside, but parts and finishing never match IWC specifications. Authorized service centers refuse counterfeit watches outright.
Do serial numbers on a fake IW371447 matter?
They matter as evidence. Replica serials are frequently duplicated across many units, which is one of the fastest ways to confirm a counterfeit.