Short answer
A replica Portofino Chronograph is a counterfeit copy of the IWC Portofino Chronograph. Copies sell for about $50 to $800. The genuine Portofino Chronograph 39 (ref. IW3914) lists at US authorized dealers above $6,000 in steel on a leather strap. Importing or selling a counterfeit watch in the United States is a federal offense, not a gray-market purchase.
Genuine reference data
IWC Schaffhausen released the Portofino Chronograph 39 in 2021 as reference IW3914. The case measures 39 mm across and about 12.6 mm thick. Water resistance is 3 bar. It runs caliber 69355, an automatic chronograph at 28,800 vibrations per hour with a power reserve near 46 hours. The dial carries a 30-minute counter at 12 o'clock, running seconds at 6, and a day-date window at 3.
The earlier 42 mm Portofino Chronograph, ref. IW3910, used caliber 79320, built on the Valjoux 7750 architecture. That version has a three-register dial and a thicker case. Both versions use sapphire crystal and a solid caseback with engraved reference numbers.
Replica tiers and prices
Three grades dominate the market.
- Quartz copies: $50 to $150. The chronograph second hand ticks in one-second steps.
- Asian 7750 copies: $250 to $450. Most 42 mm replicas use this movement.
- Higher-priced automatic copies: $500 to $800. Sellers advertise decorated rotors and cloned bridges.
Most replicas do not use an IWC movement. Higher-priced copies sometimes use a stock ETA or Sellita chronograph base. The 39 mm replica often hides a thin quartz movement to match the slimmer case.
Differences to check
- Case thickness. Genuine 39 mm: about 12.6 mm. Replicas often measure 13.5 mm to 14.5 mm.
- Day-date font. Genuine windows use a thin sans-serif. Copies use a wider, heavier type.
- Subdial spacing. Copies sit the subdials closer to the center.
- Pusher action. Genuine pushers start, stop, and reset in one firm click. Copies feel gritty and stall on reset.
- Caseback engraving. Reference numbers on copies are shallow or misspelled.
Photos from a seller prove little. Case thickness and pusher feel require the watch in hand.
US legal facts
18 U.S.C. 2320 covers trafficking in counterfeit goods and carries up to 10 years in prison for a first offense. 15 U.S.C. 1117(c) lets a trademark owner recover statutory damages of $1,000 to $200,000 per counterfeit mark, and up to $2,000,000 per mark for willful use. US Customs and Border Protection seizes counterfeit watches at ports of entry. The $800 de minimis exemption does not cover goods with counterfeit marks, so one watch in a parcel can be seized and destroyed.
Bottom line
A replica Portofino Chronograph is a counterfeit, not a budget version. Buyers get a generic movement, a thicker case, and no service from IWC. US law treats the sale as a crime and the import as a seizure. Genuine reference data is public, and secondhand asking prices track on large marketplaces.