A fake IW371425 is a counterfeit copy of an IWC Portugieser Chronograph, and the first tell is the chronograph layout. Genuine Portugieser Chronograph watches put the running seconds at 6 o'clock and the chronograph minute counter at 12, while many fakes keep the stock movement layout with seconds at 9. Movement finish, caseback engraving, and dial printing confirm the answer.
This guide covers what the reference is, the checks that separate real from replica, what fakes sell for, and the legal exposure that comes with buying or reselling one.
What is the IW371425?
The IW371425 belongs to the IWC Portugieser Chronograph line, a two-register chronograph in a stainless steel case of about 41 mm. IWC builds this family around a clean dial: applied indices, a printed minute track, and two subdials.
Reference numbers in the IW3714xx and IW3716xx blocks cover different dial colors, hands, and production years. IWC's own reference page is the source worth trusting for the specs of your exact watch.
Dial variants matter here. A blue dial with gold hands and a silver dial with blued hands carry different reference numbers, and counterfeiters mix parts from both to build one watch.
How to spot a fake IW371425
Four areas give away a replica: the movement, the dial, the caseback, and the feel on the wrist. Work through them in that order.
1. Movement
Early IW3714-series watches use IWC calibre 79350, a Valjoux 7750 base reworked in Schaffhausen. The 2020 refresh moved to the in-house calibre 69355 with a column wheel. Either way, the finishing is the giveaway.
Look for Geneva stripes with sharp edges, blued screws, and a rotor carrying the IWC medallion. Fakes show coarse brushing, printed text that flakes, and a rotor that rattles instead of gliding.
2. Dial and subdials
On the genuine watch the running seconds sit at 6 and the chronograph counter sits at 12. A seconds hand at 9 means a stock 7750 layout underneath, which is the common fake setup.
Check the printing under magnification. Genuine dial text is crisp, while replica text bleeds at the edges and the indices sit off center.
3. Caseback and engraving
IWC stamps the reference number between the lugs and engraves the caseback with the brand name, reference, and serial in a deep, fine cut. Fakes use shallow laser etching that catches light a different way.
4. Weight, crown, and pushers
A steel Portugieser Chronograph feels dense in the hand, and the crown winds with a firm click at each turn. Replicas feel light, and the chronograph pushers travel with a mushy, uneven press.
What do fake IW371425 watches cost?
Replica listings span a wide band: about $80 for a quartz copy, and $400 to $700 for a so-called super clone with a decorated automatic movement. The genuine steel Portugieser Chronograph lists in the high four figures in USD.
Price proves nothing on its own. A dishonest seller can ask genuine money for a replica, so verify the watch, not the listing.
Where counterfeit IW371425 watches turn up
- Peer-to-peer marketplaces and social media groups, often with stock photos
- Classified ads priced 40 to 60 percent below market
- Auction listings with no box, no papers, and no service history
- Online stores that print "Swiss made" on a replica listing
Boxes and papers help, but they do not settle the question. Counterfeiters print booklets and warranty cards too.
What to ask a seller before you pay
- Send a video of the second hand sweeping and the chronograph starting, stopping, and resetting to zero.
- Photograph the caseback and the reference stamp between the lugs.
- Show the warranty card, the booklet, and the original invoice if they exist.
- Name a watchmaker who will inspect the watch before funds move.
- Give the service history and the date the watch was last opened.
A seller who stalls on these requests is a seller worth walking away from.
Legal and practical risks
In the United States, trafficking in counterfeit goods is a federal crime under 18 U.S.C. § 2320, and U.S. Customs and Border Protection can seize counterfeit watches at the border. The buyer loses both the money and the watch.
IWC will not service or authenticate a counterfeit, so a fake carries no factory support, no spare parts, and no resale value. Selling one as genuine adds fraud to trademark infringement.
Frequently asked questions
Can I tell a fake IW371425 from photos alone?
Sometimes. Dial layout, subdial position, and caseback engraving show in clear photos, but movement finish needs a look through the display back. Ask for a video of the running chronograph.
Do replica IW371425 watches use real IWC movements?
No. IWC does not sell its calibres to third parties. Replicas use Chinese or generic Swiss movements, sometimes with an engraved rotor shaped to look like IWC's.
Will a watchmaker authenticate one?
A watchmaker who knows IWC can open the case and check the movement, the reference stamp, and the dial. Ask for a written opinion before you buy.
Is buying a fake IW371425 illegal?
Prosecution of a single personal purchase is uncommon, but importing a counterfeit watch can lead to seizure, and reselling one is a federal offense. The risk climbs with volume.
The short version
Check the movement, then the dial, then the caseback, then the feel on the wrist. Pay for an inspection when the price or the seller looks off. A real IW371425 comes with IWC paperwork, a service history, and a movement that matches the archive.