What a fake Portofino 39 is
A fake Portofino 39 is a counterfeit copy of the IWC Portofino Automatic 39, the 39 mm stainless steel dress watch sold under references such as IW356501, IW356502 and IW356504. The genuine watch carries a 39 mm case, about 9.4 mm of thickness, a Swiss automatic movement (IWC calibre 35111) and a boutique price near $5,000. A counterfeit copies the silhouette from across a room and almost nothing else. The finishing, the movement and the paperwork do not survive close inspection. If you keep only one rule, keep this one: a genuine IWC Portofino 39 can be serviced and warranted by IWC, and a counterfeit cannot.
How to identify a counterfeit Portofino 39
Work through these checks in order. The first two take seconds and eliminate most fakes.
- Read the reference number engraved on the caseback and printed on the papers. Genuine Portofino 39 automatics carry a number beginning with IW, for example IW356501. Write the full number down.
- Confirm that the reference appears in IWC's published catalogue. Counterfeiters often print a number that matches no IWC product, or pair a Portofino reference with another model's dial.
- Measure the case with calipers. Genuine 39 mm references measure 39.0 mm across the bezel and about 9.4 mm thick. Most counterfeits run 40 to 42 mm wide and 11 mm thick or more.
- Examine the dial text with a 10x loupe. Genuine printing is sharp, evenly spaced and sits on a clean lacquer or galvanic dial. Fake printing is heavy at the serifs, and the letter spacing in Schaffhausen drifts.
- Check the applied indices and the hands. Genuine indices are solid metal with polished bevels and sit flush to the dial. Fake indices are plated plastic or soft metal, and the leaf hands show ragged edges under magnification.
- Study the caseback engraving. Genuine engraving is deep and precise and includes the reference, a unique case serial, Sapphire Crystal, 5 bar and Swiss Made. Fakes use shallow laser etching, wrong typefaces and the same serial number on many watches.
- Inspect the movement through the display back. Genuine IWC calibre 35111, based on the Sellita SW300-1, has 25 jewels, a 42 hour power reserve and a rotor engraved with IWC and Probus Scafusia. Fakes use unbranded or Miyota derived movements, and many beat at 21,600 vph instead of 28,800.
- Bring the watch to an authorized IWC service center or boutique for in person verification. A watchmaker can open the case and confirm the movement and serial. Treat this as the only definitive answer.
Why the paperwork matters
Genuine Portofino 39 watches ship with a box, an instruction booklet and a warranty record tied to the serial number. Counterfeit sets reuse one serial across hundreds of units, print blurry booklets on thin stock and ship boxes with mismatched logos and fonts. Ask for clear photos of the caseback serial, the warranty card and the receipt from an authorized dealer. A seller who cannot produce these three items in focus is describing a counterfeit.
Risks of buying or owning one
- No manufacturer warranty and no authorized service. Independent watchmakers often decline to open counterfeit cases because parts are not available.
- No parts compatibility. Crowns, crystals, gaskets and bracelets from a counterfeit do not fit a genuine case, and the reverse is also true.
- Customs seizure. Counterfeit trademarked goods entering the United States are subject to seizure and forfeiture by U.S. Customs and Border Protection.
- No resale market. Auction houses, dealers and trade platforms reject counterfeit watches, so the money is gone.
- Criminal exposure for resale. Federal law prohibits trafficking in counterfeit goods, and penalties increase for repeat offenses.
What to do if you are offered one
Request the reference number and the case serial in writing before any payment. Compare both against IWC's catalogue and against the measurements above. If the seller refuses an in person inspection at an authorized service center, walk away. A genuine seller of a genuine Portofino 39 will not object to verification, because verification is the entire point of buying a Swiss watch.