A fake IW371485 is a counterfeit copy of the IWC Portugieser Chronograph, a two-register automatic chronograph from the IW3714 reference family. Copies sell from about $60 for a quartz lookalike to $400 for a high-grade replica with a mechanical movement. The genuine watch runs a modified Valjoux 7750, and that movement is where most fakes give themselves away.
What is the real IW371485?
The IW371485 sits inside the Portugieser Chronograph line, IWC's cleanest two-register design. The case is stainless steel, sized around 40.9 mm across and 12.3 mm thick, with a domed sapphire crystal up front and a sapphire display back. IWC fits this family with calibre 79350, a Valjoux 7750 base rebuilt into a two-register layout with a 44-hour power reserve.
- Dial: silver-plated or black, with two subdials, a 30-minute counter at the top and running seconds at the bottom
- Hands: leaf-shaped feuille hands, polished with a beveled edge
- Numerals: applied metal Arabic numerals, not printed
- Case: brushed and polished stainless steel, water resistant to 3 bar
- Strap: alligator leather on a signed pin buckle or deployant clasp
Reference numbers in this family shift with dial color, strap, and bracelet, so two watches that look different can sit a few digits apart. Confirm the exact spec through IWC before you spend money on anything.
How do you spot a fake IW371485?
Fakes split into two groups: cheap quartz copies and higher-grade replicas with a mechanical movement. Both miss details that take real tooling and real finishing to reproduce.
Dial and hands
- Print quality. On a real dial, the IWC and Schaffhausen text stays sharp under a loupe. Fake printing looks fuzzy or slightly bold.
- Applied numerals. Real markers are solid metal with polished edges. Fakes use glued or printed markers that sit flat on the surface.
- Hands. Genuine feuille hands are polished on top and beveled at the sides. Replica hands look stamped and dull.
- Subdial depth. Real subdials sit in a recessed ring with a crisp printed track. Fakes show a shallow, soft edge.
Case and caseback
- Engraving. The reference number, serial, and International Watch Co. script are laser-crisp on a real caseback. Fakes show shallow or uneven cuts.
- Finishing. Real cases mix brushed flanks with polished bevels. Cheap copies polish everything or brush everything.
- Crystal. A real sapphire crystal shows almost no reflection and no distortion at the edges. Mineral glass fakes carry a blue tint and warped edges.
- Weight. Steel cases feel dense in the hand. Many fakes use lighter alloy or hollowed mid-cases.
Movement
This test ends the argument. Remove the caseback or hold the watch to a loupe. Calibre 79350 shows Geneva stripes on the bridges, blued screws, and a signed rotor.
Most replica movements show unfinished plates, a generic rotor with no engraving, or a quartz module behind a decorative plate. A chronograph that ticks once per second instead of sweeping is quartz, full stop.
Strap, buckle, and paperwork
Genuine IWC straps have even stitching, a soft grain, and a signed buckle. Fakes often ship with stiff leather, uneven stitches, and an unsigned clasp. Paperwork matters just as much: a real set includes a warranty card, a booklet that matches the reference, and a box that holds the watch without rattling.
What do high-grade replicas still get wrong?
A $400 replica can copy the case shape, dial print, and strap well enough to fool a listing photo. It cannot copy movement architecture at that price.
- Subdial spacing. The 79350 layout puts the counters in set positions. Replica dials shift them a fraction, and a trained eye sees it.
- Hand height. Real hands sit close to the dial with even clearance. Fakes show uneven gaps that catch light.
- Crown action. Winding and setting feel smooth on a serviced 7750. Replica movements feel gritty.
- Chronograph reset. Genuine seconds hands snap back to zero and stay there. Replicas land a hair off.
None of this shows up in an online photo. It shows up in your hand.
What does a genuine IW371485 cost?
Used steel Portugieser Chronographs trade in the $4,000 to $7,000 range, with box and papers pushing the number higher. A seller who offers one for $600 is selling a fake, or a watch with no history. There is no middle ground.
Replica pricing lives in a different world. Good mechanical copies run $200 to $500, and they lose value the moment you open the box.
Are replica IW371485 watches legal?
In the United States, selling a watch with a counterfeit trademark is illegal, and importing one can lead to seizure at customs. Buying a replica for personal use sits in a gray area, but you have no recourse if the watch arrives broken or never arrives. Weigh that risk before you send money.
Quick checklist before you buy
- Ask for a photo of the caseback and the movement.
- Compare the reference number against IWC's list.
- Check the seller's history and return policy.
- Take any purchase over $1,000 to a watchmaker for inspection.
FAQ
Does the IW371485 have a date window?
The IW3714 chronograph family includes versions with a date at 3 o'clock. Verify the exact dial layout for IW371485 through IWC, since the family spans many small variations.
Can a jeweler tell a fake in seconds?
Yes, when the watch runs a quartz movement or a generic rotor. A trained eye catches both before the watch reaches the bench.
Why are IWC Portugieser watches copied so often?
Clean dials are easier to copy than busy ones. The Portugieser's simple two-register face and printed text give counterfeiters a short list of details to fake.
What should I check first on a used IW371485?
Start with the movement and the caseback engraving. Those two checks cost nothing and expose most fakes.