A fake IW371642 usually reveals itself in three places: soft or doubled dial printing, subdials that do not align with the hands at zero, and a chronograph action that feels gritty instead of crisp. Start with the dial, then the case, then the movement, and only after that look at the box and papers.
Quick Answer: What Gives a Fake IW371642 Away
The reference sits inside the IWC Portugieser Chronograph 3716 family, a watch known for clean applied markers, balanced twin counters, and an in-house column-wheel chronograph. Copies tend to copy the shape but miss the small things a jeweler or an experienced owner notices in hand.
- Dial text that looks flat, fuzzy, or slightly raised under a loupe
- Subdial hands that fail to reset to 12 at the same instant
- Pushers with a spongy press and no defined click
- Case edges that feel rounded rather than crisp where the lugs meet the case band
- Rotor engraving that is shallow, uneven, or filled with the wrong font
Understand the Reference Before You Judge It
Know which dial, hand set, and strap configuration belongs to your reference before comparing. Buyers who do not know the correct combination often accept the wrong date font, a wrong subdial layout, or a case size that is a millimeter off. Photograph the genuine configuration from a reputable reference source and keep it beside you during inspection.
Dial and Hands: The Fastest Tell
Printing quality separates most fakes. On the original, lettering sits sharp and evenly spaced, with consistent stroke weight. On a copy, the brand name often sits too low, too high, or too close to the marker track, and the minute track dots may drift out of line around the chapter ring.
- Applied markers should sit flush and level, with no glue visible at the base
- Hands should reach the minute track without overhang or a short tip
- The seconds and minute counter hands should reset to zero every time
- Lume plots, where present, should match in tone and application depth
Case, Pushers, and Crown
Run a fingertip along the lug edges. Genuine cases are finished with a distinct break between brushed and polished surfaces, and a copy often blurs that line. Check the crown threads and pusher travel. A correct chronograph pusher gives a short, firm click at the start and the stop, and a slightly heavier press at reset.
Movement and Chronograph Behavior
Ask for a clear photo of the movement and a timegrapher reading. The 3716 family uses an in-house column-wheel chronograph, and the finish on bridges and the rotor is applied with care. A copy frequently uses a stock chronograph module with a decorated cover plate, visible through uneven engraving or a rotor that spins loosely with a rattle.
Caseback, Serial, and Paperwork
Compare the serial on the caseback with the number on the warranty card and the movement. Re-engraved numbers usually sit lower, with a different depth or a faint halo around the digits. Genuine papers carry consistent fonts and spacing that copy sets rarely match across every page.
Questions to Ask a Seller
- Can you send a photo of the movement and the caseback serial side by side?
- What is the service history, and is there a receipt?
- Does the chronograph reset cleanly to zero from the twelve position?
- Is there a return window long enough for an independent inspection?
Pay through a method with buyer protection, meet at a watchmaker if you can, and walk away when a seller resists photos or a short hold period. A short inspection costs far less than a bad purchase.