The IWC Portofino Automatic 39, reference IW3565xx, measures 39 mm across and 9.3 mm thick. Copies sell for $250 to $450. Most copies get the dial layout close and the case height wrong. A caliper reading and a side-lit photo of the case back settle the question in under a minute.
Genuine specs to measure against
Case
- Diameter: 39 mm
- Height: 9.3 mm
- Lug width: 20 mm
- Water resistance: 3 bar, 30 m
- Crystal: sapphire, antireflective coating on both faces
- Case back: solid steel, snapped in place, engraved
Movement
IWC caliber 35111. The base is the Sellita SW300-1. 25 jewels, 28,800 vph, 42 hours of power reserve, hacking seconds, date at 3. Automatic winding with a ball-bearing rotor.
Dial
Leaf hands with no luminous material. Roman numerals at 12 and 6, applied baton markers on the other hours. Date window at 3. The word SCHAFFHAUSEN sits below the IWC mark in a light serif face with wide letter spacing.
Fake Portofino 39: How to Buy the Best Luxury Swiss Fake Watch Online
Where fake Portofino 39 watches fail
- Thickness. Most copies measure 10.5 mm to 11.5 mm. The added height comes from the movement holder and a thicker case back.
- Date font. Copy date wheels use a heavier numeral with wider spacing than the original.
- Hands. Copy leaf hands are flat. Many carry lume that the original does not have.
- Dial print. SCHAFFHAUSEN runs tight on many copies. Letter height is off by a fraction of a millimeter.
- Case back. Laser etching replaces the deep stamp of the original. Edges look soft under side light.
- Crown. The Probus Scafusia relief sits shallow and the crown teeth are sharp.
- Strap. Embossed calf replaces alligator. Stitch pitch runs wider.
Movements inside copies
Two movements show up in most replicas. The Miyota 9015 has 24 jewels, runs at 28,800 vph, and has a rotor that spins with an audible whine. Clones of the ETA 2892 also appear. Neither matches the finishing on the 35111, and neither is a drop-in swap for IWC parts. A stuttering seconds hand points to an indirect-drive layout, not the direct-drive center seconds of the genuine caliber.
Fake Portofino 39: Best Replica Buying Guide
Checks before you buy
- Ask for a caliper photo of case height taken at the lugs.
- Ask for a macro shot of the print at 12, shot straight on.
- Ask for a case back photo with light raking across the surface.
- Ask for a 10 second video with the watch running. Watch the seconds hand for stutter.
- Ask for the case number and take it to an authorized dealer. IWC does not run a public serial lookup for this reference.
Price and paper trail
New Portofino Automatic 39 watches list between $6,000 and $7,000, depending on year and dial. Box, papers, and a dated warranty card raise resale value. A $300 copy has no service history, no parts supply, and no resale market. Service on a genuine 35111 at IWC runs several hundred dollars and takes weeks.
What stays unknown
Replica sellers change suppliers without notice. Two copies from the same listing can carry different movements. Gold plating thickness on two-tone models is not published. Case alloy is not published. Treat any spec sheet from a seller as a claim, not a fact. Measure the watch yourself or buy from a source that accepts returns.