Short answer
The IW371495 is a reference from the IWC Portugieser Chronograph line, a 41mm steel bicompax chrono. Most listings that show up when you search "fake IW371495" are replicas being sold openly as replicas, not counterfeits passed off as real. The listings that actually lie are usually caught fast: dial printing gives them away, then the subdial layout, then the movement visible through the caseback. If someone is asking $280 for a watch described as genuine, that is your answer already.
What the IW371495 actually is
The Portugieser Chronograph family runs on a two-register layout. Running seconds sit at 6 o'clock and the 30-minute counter sits at 12. Older references in the family used a modified Valjoux 7750, which IWC called the caliber 79350. Current production uses the in-house 69355, a column-wheel chronograph. Case size is 41mm on the modern versions, with sapphire front and back, and water resistance rated at 30 meters. Straps are alligator on a signed pin buckle or deployant.
That layout matters because it is the hardest thing for a cheap replica to fake. The spacing between the two subdials is dictated by the movement underneath. Swap in a quartz module or a column-wheel clone that does not match, and the whole dial looks off, even to someone who has never held the watch.
Dial and case tells
- Printing. On the real thing, "IWC" and "SCHAFFHAUSEN" are crisp, evenly weighted, and correctly spaced. Fakes tend to be slightly fuzzy at the edges, or the letterforms are a touch too wide.
- Subdial spacing. Bicompax dials leave a lot of open space at 3 and 9. If the two registers look crowded toward the center, the movement inside is wrong.
- Date wheel. Check the font of the numerals, not just the window position. Cheap replicas use a generic date disc with a different typeface from the dial.
- Hands and markers. Polished, faceted, and cleanly finished on the genuine article. Replicas often show rounded edges or uneven lume fill.
- Case finish. Look at the transition between the polished bezel and the case band. Sharp, consistent lines on the real watch. Wavy or over-polished edges on a fake.
Movement and caseback
Turn the watch over. A genuine 69355 has a column wheel you can see, Geneva stripes on the bridges, and a skeletonized rotor. Replicas almost always run a decorated Asian 7750 clone, a Seagull ST19, or a quartz module, and each has a signature. The 7750 wobbles on the wrist when the rotor spins and beats at 28,800 vph. The ST19 is a hand-wound column wheel, so no rotor at all. Quartz is silent and the seconds hand ticks instead of sweeping.
Pusher feel is another quick test. A real column-wheel chronograph has a light, distinct start and a clean snap-back to zero on reset. Mushy pushers with a slow reset point to a low-grade movement.
Price and paperwork
A genuine IW371495 trades well into four figures on the secondary market, and usually higher with box and papers. That number alone filters out most scams. Ask for the reference number engraved between the lugs, the serial on the caseback, and photos of the warranty card. Sellers who only post stock images, or who refuse a return window, are not worth the conversation.
If you want a replica, buy it as one
There is nothing wrong with wanting the look at a fraction of the price, as long as the seller is straight with you. Replica tiers are real: cheap quartz junk at the bottom, mid-tier Asian 7750 in the middle, and high-end builds that get the case proportions and dial printing close. A good seller lists the movement, the case diameter, and the strap material up front, and offers returns. If a listing hides those details, the watch will too.
Quick checklist
- Compare subdial spacing against a reference photo of the genuine dial.
- Read the dial printing under magnification, looking for fuzzy edges.
- Check the movement through the caseback and confirm the beat rate.
- Test the pushers for a crisp start and instant reset.
- Match the asking price against real market data before you send money.