A fake IW371648 is a replica of the IWC Portugieser Chronograph, and it is caught on three points first: a date window that should not be there, subdials sitting in the wrong place, and a display back that reveals a generic decorated movement instead of IWC calibre 69355. The genuine reference keeps a clean dial with a chronograph totalizer at 12 o'clock and running seconds at 6, and it has no date aperture anywhere.
Because the Portugieser Chronograph is a simple, elegant design with a lot of open dial space, it is one of the easier IWC models to copy at a glance and one of the easier ones to authenticate once you know where to look. The checks below work for the IW371648 and for the rest of the 3716 family.
Iw371648 Replica Fake: A Comprehensive Guide to Buying First Copy Watches Online
Why the IW371648 attracts counterfeiters
The 3716 line uses a 41 mm stainless steel case, a narrow bezel, and a dial built on thin feuille hands and applied numerals. There is very little on the outside that requires expensive tooling, so a replica factory can get the silhouette close without much effort. The money in the real watch sits in the movement and the finishing, which is exactly what most fakes skip.
Dial and printing tells
- No date. The Portugieser Chronograph has no date window. A rectangular aperture at 3 or 4:30 is an immediate red flag.
- Subdial positions. Genuine layout is chronograph minutes at 12 and running seconds at 6. Many fakes use a stock chronograph movement with running seconds at 9, or they fit a working layout but leave one subdial as a dummy.
- Numerals and printing. Applied numerals should sit flat and even, with crisp edges. Replica printing looks slightly heavy, and the minute track can drift out of alignment.
- Hands. The feuille hands should taper to a sharp point and be evenly finished. Fakes often show rounded tips or uneven bluing.
- Subdial rings. The snailed texture inside the counters should be fine and regular, not stamped and coarse.
Case, lugs and finishing
Genuine case flanks are brushed and the lugs are polished on their upper surfaces, with a clean transition between the two. On a fake IW371648 the brushing often runs in one direction across surfaces that should be polished, and the lug edges feel sharp rather than softened. Check the crown too: it should be signed, sit flush, and operate with firm, defined clicks.
Fake Watch IW371648: What You Need to Know
The movement is the hardest part to fake
The genuine watch runs IWC calibre 69355, a column-wheel chronograph with roughly 46 hours of power reserve and a see-through caseback. Look for Geneva stripes, a signed rotor, and clear engraving of the calibre number. Replica movements are usually stock chronograph calibres with a decorative plate, and the pusher feel gives them away: genuine chronograph pushers are crisp on start and stop, while cheap copies feel spongy or need a hard push.
Caseback, reference and paperwork
Engraving on the caseback should be sharp, evenly spaced, and consistent with the reference. Fakes often use a generic caseback shared across several models, so the reference number does not quite match the dial variant. Photographs of the caseback, the movement, and the warranty card, checked against published specifications, are the fastest way to confirm a seller's claim before money changes hands.
Price and provenance red flags
- A price far below the normal secondary market level for the reference.
- Stock photos instead of dated, real images of the actual watch.
- A seller who cannot show the movement or the caseback serial.
- Listings that use grading terms such as first copy, AAA, or mirror quality. Those words describe replicas, not genuine watches.
Quick checklist before you buy
- Confirm there is no date window.
- Confirm chronograph minutes at 12 and running seconds at 6, both working.
- Ask for a clear movement photo through the caseback.
- Match the caseback reference to the dial variant.
- Test the pushers on video, or in person, before paying.
Anyone shopping for first copy watches should go in knowing these differences rather than treating a low price as the only signal. A replica can look convincing in a listing photo and still fail every one of the checks above in hand.