Buy the seller before you buy the watch. On a replica of the IWC reference IW371646, the gap between a convincing piece and a dead movement is almost never visible in a listing photo. Ask for dated QC images, a short video of the chronograph starting, running and snapping back to zero, and a written return window. A seller who cannot supply all three is not worth the risk, however sharp the pictures look. Two more ground rules apply before you pay: confirm the exact dial, case and bracelet variant you are matching, because the IW3716 block covers several versions, and accept that a replica carries no warranty, no service history and a genuine chance of seizure in transit.
Fake IW371646: Identifying and Avoiding Counterfeit Watch Scams
Start from the real reference
You cannot judge a copy without knowing the original. IW371646 belongs to the IWC Portugieser Chronograph family, a 41 mm steel chronograph with a bicompax dial: a 30 minute counter at 12 o'clock, running seconds at 6, a date window at 3, leaf shaped hands, applied numerals and a railway style minute track. IWC lists caliber 69355 inside, an in-house automatic chronograph with roughly 46 hours of reserve, sapphire on both sides, and water resistance rated at 3 bar. Case thickness lands near 13 mm and lug width at 20 mm. Pull the current spec sheet from the manufacturer for your exact variant before you compare anything, since dial colors and strap options change the details that matter.
What to look for on the replica
Case and proportions
Proportion is the first tell. A copy that is 1.5 mm too thick sits high on the wrist and pushes the lugs off the arm. Look at the lug curve, the polished flank, and the transition between the brushed caseband and the bezel. Ask for a photo of the watch on a scale and a caliper shot of the case, not just a wrist roll.
Dial and subdial spacing
Bicompax layouts are hard to copy. On many replicas the subdials sit closer to the center than they should, which makes the dial look crowded. Check the printing weight of the brand text and the numerals, the crispness of the minute track, and whether the date sits centered in its window. Subdial hands should be flat and evenly finished, not stamped and domed.
Hands and crystal
Leaf hands need the right curvature and a clean polish along the spine. The crystal should be colorless sapphire with even anti reflective coating. A blue or purple cast under indoor light points to cheap glass or a heavy coating.
Movement and chronograph behavior
Most replicas in this size run a 7750 derived automatic, sometimes decorated to resemble the 69355. Ask for video of the chronograph in three states: start, stop and reset. The reset should snap to zero once, without bounce. Listen for rotor noise and check that the winding feels smooth. A movement that starts and stops cleanly on video is worth more than any description.
Caseback and bracelet
Engraving depth, the fit of the caseback, and the endlink fit against the case matter more than the movement decoration you will never see while wearing it. Squeaky or loose endlinks are a fast sign of a budget build.
Parameter bands worth checking
- Case diameter: target about 41 mm. Anything under 40 mm or over 42 mm is a different watch with a borrowed dial.
- Thickness: near 13 mm is right. Above 15 mm, the watch will wear like a brick.
- Lug width: 20 mm. Straps and bracelets in other widths will not fit.
- Power reserve: 40 hours or more after a full wind. Under 30 hours suggests a tired or low grade movement.
- Chronograph reset: single snap to zero from any position.
- Water resistance: treat any claim as decoration. Do not swim in a replica regardless of the number printed on the caseback.
Common pitfalls
- Stock photos or photos borrowed from another seller. Demand dated, tagged images.
- Vague factory names used as a quality promise. Factory labels change and mean little without proof shots.
- No return policy, or one that excludes movement faults.
- Sellers who push you to a payment method with no recourse.
- Ignoring customs risk. Counterfeit goods can be seized, and you lose both the watch and the money.
- Buying a replica and expecting it to hold value or accept genuine parts.
Legal and shipping reality
Replicas infringe trademarks. In the United States, counterfeit goods are subject to seizure at the border, and payments to overseas sellers offer thin protection. Budget for the possibility of loss, keep records, and never treat a replica as an investment or as a substitute for insured value.
FAQ
How much should a good IW371646 replica cost?
Pricing varies too widely to quote, and any guide that prints a fixed number is guessing. Compare several sellers offering the same build, and treat the cheapest quote with the most suspicion.
Can I tell the quality from photos alone?
Partly. Photos show dial printing, subdial placement and endlink fit. They do not show timing, rotor noise or how the chronograph resets. Always ask for video.
Will a jeweler service a replica?
Most will not, and many will refuse to open the case. Plan on a watchmaker who works on generic Swiss style movements, or accept that a failure ends the watch's life.
Is a clone movement close to the real caliber?
Visually, decoration can come close. In function, tolerances and long term reliability differ, and parts are not interchangeable.
What is the single best check before paying?
A live video of the chronograph running and resetting, filmed with the seller's name in frame, plus a written return window.