The replica Portofino 42 is a copy of the IWC Portofino Chronograph, the 42mm two-register chronograph that IWC built on a Valjoux 7750 base. Copies sell for about $80 to $600, and the price tracks the movement, the case finish, and how close the dial comes to the original. The "42" is the case diameter in millimeters, so any listing that reports a different size is telling you something about the seller.
Two facts to settle before shopping. A replica is not a genuine IWC watch, and US Customs can seize counterfeit goods at the border. No IWC service center will touch a copy, so repairs fall to the seller or to a local watchmaker willing to work on clone movements.
What Does Portofino 42 Mean?
Portofino is IWC's dress watch line, and the number is the case width. The 42mm versions are the chronographs, drawn from the IW3910 reference family, with a two-register dial instead of the three-register layout found on many chronographs of the same era.
- Case: 42mm stainless steel, about 13.5mm thick, 20mm lug width
- Dial: two sub-dials at 12 and 6 o'clock, day and date window on many versions
- Movement (genuine): IWC caliber 79320, a modified Valjoux 7750
- Crystal: domed sapphire with an anti-reflective coating
- Caseback: display back on most references
That movement choice is the reason a decent copy is possible. The genuine watch uses a 7750-family chronograph, and Chinese factories make a workable version of the same design. A copy with that movement keeps the pusher feel, the sub-dial layout, and the date position of the original. A quartz copy keeps the look and loses everything else.
Movement Tiers in a Replica Portofino 42
Quartz
Cheap and thin, often 9mm to 10mm because no rotor sits on top of the movement. The chronograph hands snap to zero instead of sweeping, and the sub-dials sit at the wrong distance from the center. Fine as a costume piece, poor as a watch.
Asian 7750 clones
The standard for mid-tier copies. Expect a smooth sweep on the seconds hand, working chronograph pushers, and a thickness close to the original. Quality varies by factory, so ask who built it.
"Swiss movement" claims
Most listings that say Swiss movement mean a Swiss-made balance or mainspring fitted to an Asian base, not a complete Swiss caliber. The claim is hard to verify without opening the case. Treat it as marketing unless the seller shows a movement photo with a clear stamp.
How to Check a Portofino 42 Replica Before You Pay
- Measure the case: 42mm across, not 41 or 43.
- Check the lug width: 20mm, which sets how the strap sits.
- Look at sub-dial spacing. Both should sit inside the dial without crowding the date window.
- Check thickness: 13mm to 14mm on an automatic, under 10mm on quartz.
- Inspect the hands. Leaf shape, correct length, tips reaching the minute track.
- Read the dial print under a loupe or a phone macro shot. Thin, uneven letters show a cheap pad print.
- Check the caseback engraving depth and font.
- Ask for a video of the chronograph start, stop, and reset.
Price Tiers and What Changes
- Under $100: quartz, mineral glass, stamped caseback, sub-dials in the wrong place.
- $150 to $300: Asian 7750, sapphire on some models, decent dial print, correct 42mm case.
- $350 to $600 and up: tighter case machining, better anti-reflective coating, decorated rotor, dial font close to the original.
The jump from the first tier to the second buys the most. Once you pass about $400, you are paying for details that only a side-by-side comparison will show.
Legal and Practical Limits
US trademark law protects the IWC name and logo, and Customs and Border Protection can seize counterfeit watches shipped into the country. Reselling a copy carries more risk than buying one for personal use. Either way, the item has no warranty and no resale market.
Service is the other problem. A local watchmaker can clean and oil a 7750 clone for $80 to $150, but parts come from the same supply chain that made the watch. If a pusher or a crown fails, replacement may take weeks.
Frequently Asked Questions
Is a replica Portofino 42 water resistant?
Most are rated for splashes only. Gaskets on budget copies are thin, and the caseback seal is the first thing to fail. Keep it away from pools, showers, and salt water.
Does the replica use a real IWC movement?
No. IWC does not sell its calibers to third parties, so every copy runs on a clone, a generic Swiss ETA, or quartz.
How does the 42mm copy compare to the 40mm Portofino Automatic?
The 40mm automatic is a three-hand watch with no chronograph, a cleaner dial, and a thinner case. Copies of it exist too and cost less, but the 42 chronograph is the harder build and the better test of a factory's work.
When to Skip the Replica
If you want a warranty, service history, or resale value, a copy gives you none of those. A non-trademarked dress chronograph from a brand such as Seiko or Tissot costs about the same as a mid-tier replica and comes with a service network. The replica Portofino 42 makes sense only if the look of that specific watch is what you want and you accept the limits.