Quick Answer
A replica Portofino Automatic 42 is a 42 mm three-hand dress watch copy built around the Portofino Automatic layout: a slim polished case, a sunray or silver-plated dial with applied baton indices, leaf-shaped hands, a date window at 3 o'clock, and an alligator-grain leather strap. The version worth owning copies four things well: case proportions, dial printing, hand shape, and movement thickness. If any of those is off, the watch reads as a fake on the wrist, not just under a loupe.
What the 42 Means
The number describes the case diameter in millimeters, measured across the case at 3 to 9 o'clock and excluding the crown. Portofino three-hand models have shipped at 37 mm, 40 mm, and 42 mm across different generations, so the figure on a product page tells you which case the seller copied. Confirm it with calipers instead of trusting the listing. A 42 mm case should measure 41.7 to 42.3 mm. Anything outside that range is a different case sold under the same name.
Thickness matters just as much. The Portofino line is a dress watch, so a genuine 42 mm case stays near 9.5 to 11 mm. Many replicas add 2 mm or more because the movement inside is thicker than the original calibre. That extra depth pushes the watch off the wrist and makes the case look swollen from the side.
Specs to Confirm Before You Pay
- Case diameter: 42 mm nominal, measured at 3 to 9 o'clock.
- Case thickness: 9.5 to 11 mm. A dress watch this size should slide under a cuff.
- Lug width: 20 mm on the three-hand Portofino case, which makes strap swaps easy.
- Lug-to-lug: roughly 48 to 50 mm. This figure decides whether it fits a 6.5 inch wrist.
- Crystal: flat or lightly domed sapphire with a single anti-reflective coating. Double coating produces a blue haze.
- Water resistance: 30 m to 50 m is realistic. Treat higher claims on a replica as marketing.
How to Inspect One, Step by Step
- Measure the case with calipers at 3 to 9 o'clock and write the number down.
- Lay the watch dial up and check that the date window sits centered on the 3 o'clock axis.
- Tilt the watch under a lamp and read the dial print at a shallow angle. Sharp edges and even letter spacing mean a good dial. Fuzzy or gray print means a cheap one.
- Compare the hour hand to a reference photo. Portofino leaf hands run broad near the base, taper to a point, and carry a polished bevel down the center.
- Track the seconds hand for 60 seconds against a phone stopwatch. Drift beyond two seconds points to a low-grade movement.
- Set the date through a full cycle from 28 to 3. A date that flips at midnight is correct. One that flips near 11 p.m. or hangs halfway is not.
- Wind the crown 20 turns and listen for grinding. A tight, smooth click is the goal.
- Tilt the watch and listen to the rotor. A rattle signals a loose or unbushed weight.
- Check the case back engraving with a loupe. Reference numbers should sit in a straight line rather than drift with the curve of the metal.
- Flex the strap at the lugs and inspect the stitching. Even spacing and no glue shine at the edges mark a decent strap.
- Time the watch for 24 hours on your wrist and log the daily gain or loss.
Movements You Will Find
- Miyota 9015: thin, reliable, hacking, 24 jewels. Common in mid-tier replicas.
- Sellita SW200 or ETA 2824 pattern: about 38 hours of reserve, thicker, easy for a watchmaker to service.
- Decorated Chinese automatic on a 2824 pattern: fine at arm's length, rougher finishing under a loupe.
- Quartz: skip it in this model. The seconds hand ticks and the case usually runs thicker than the original.
Flaws That Should End the Sale
Reject any example with a misaligned date window, printed instead of applied indices, a crown that grinds when you wind it, or a rotor that spins with a rattle. Walk away from sharp lug edges as well. The original is polished and softened at every transition, and that softness is one of the hardest details for a low-cost factory to copy.
Fit, Straps, and Daily Wear
At 42 mm the Portofino sits large on a small wrist. Measure your wrist and subtract the lug-to-lug figure before you commit. Swap the stock strap for a 20 mm alligator-grain or calf strap with quick-release pins if you plan to wear it often. Keep the watch out of showers and pools, and have the gaskets checked once a year if you wear it in humid weather.