Short answer
"Replica Portofino 37" refers to copies of the IWC Portofino Automatic 37. The 37 is the case diameter in millimeters. The genuine watch is the IWC reference family 4586. Copies come from factories in China and sell for about $80 to $400. No maker publishes verifiable specifications and no independent body grades them. Labels such as AAA, 1:1 and super clone carry no standard meaning.
What the genuine watch is
IWC built the Portofino Automatic 37 as a smaller version of the Portofino Automatic. Figures from the brand:
- Case diameter 37 mm.
- Water resistance 3 bar, about 30 m.
- Sapphire crystal with anti-reflective coating on both sides.
- Stainless steel or 18k red gold case. Alligator leather strap.
- Automatic movement. Some references list Calibre 35111 with a 42-hour reserve. Others list Calibre 32111 with a 120-hour reserve.
Retail sits near $5,000 to $6,000 in steel. Gold versions cost more. Check iwc.com for the current number on a given reference.
Where copies differ
- Case thickness. Copies run thicker than the original profile. Measure with calipers.
- Dial printing. The IWC logo and the SCHAFFHAUSEN line show soft edges and uneven spacing.
- Date window. Alignment and date font differ from the genuine disc.
- Movement. Many copies use low-cost Chinese automatic movements. Some use clones of the 35111. Rotor engraving and finish differ.
- Case back. Engraving depth and serial numbers do not match IWC records.
- Strap. Cowhide stamped to look like alligator is common. Genuine straps use alligator leather and carry a stamp on the lining.
Legal position in the US
Trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320. A first offense carries up to 10 years in prison and a $2 million fine for an individual. Trademark owners can sue under the Lanham Act. Statutory damages reach $2,000,000 per counterfeit mark per type of goods when the use is willful.
Import rules are separate. U.S. Customs and Border Protection seizes counterfeit watches under 19 U.S.C. 1526 and 19 CFR Part 133. Seized goods are destroyed. There is no personal-use exemption for trademark counterfeits, so one watch in one parcel can be taken and the buyer receives nothing.
How to read seller claims
Terms like 1:1, Swiss made and super clone have no agreed definition. No testing body certifies them. Ask for the movement name, the case diameter measured with calipers, and photos of the case back. Sellers often refuse one or more of those items. A price far below the market for a stated movement points to a different movement inside.
Cost of ownership
Copies have no factory warranty and no service network. Independent watchmakers can service common movements, but parts for cloned or no-name movements can take months to source. Resale value is near zero. Genuine IWC watches keep part of their value and can be serviced by the brand.