The short answer
Pick the case size first, then pay for the movement and the dial work, not for the name on the rotor. On a fake Portofino 27 the case is small enough that two details carry the whole watch: the printing on the dial and the shape of the leaf hands. A clean small-case build with a real automatic movement will look better on the wrist and last longer than a larger, busier replica with a cheap engine inside. Before you compare anything, get the seller to state case diameter, thickness, lug width and movement model in writing, then check those numbers against the genuine spec. Any listing that hides those four figures is a listing you can skip.
What the "27" in Portofino 27 means
Portofino is a family, not a single watch, and the number attached to it is a size class rather than an official reference. Genuine Portofino dress models have run from small cases in the high twenties of millimetres up to 42 mm chronographs, so sellers use shorthand like 27, 37 and 40 to separate the dress sizes from the larger ones. When you search "fake Portofino 27 vs", you are almost always comparing one of three things: the small dress case against the mid-size 37 mm version, the small case against a 40 mm automatic, or one factory batch against another in the same size. Keep those three comparisons separate. Mixing them is how buyers end up with a 40 mm watch they thought was a 27 mm.
What to look for
Case and proportions
A dress watch lives or dies on thickness. Ask for caliper photos, not wrist shots. The bezel should be thin and polished, the lugs should taper, and the crown should be small and signed. Check that the caseback engraving is deep and centred, and that the spring bar holes sit at the same height on both lugs.
Dial and hands
Look for applied Roman numerals at 12 and 6, a printed minute track that does not break up under a phone camera, and feuille hands with a clean centre ridge. The date window should sit where the genuine one sits, with a font that matches the rest of the printing. Dress Portofinos have no lume, so any glow on the hands is a warning sign.
Movement
The good small-case builds use a Miyota 9015 or a Sellita SW300 class automatic, both thin enough to keep the case under 10 mm. Cheaper builds use a 2813, which is thicker and often shows a slow, grindy date change. Ask how the date flips: a crisp snap near midnight suggests a better movement than a gradual roll from 10 pm.
Crystal, strap and buckle
Sapphire with inner anti-reflective coating should look almost invisible from above and slightly blue at an angle. A hazy or grey reflection usually means mineral glass. On the strap, check the grain direction and the signing on the buckle, and confirm whether the pins are quick-release or standard.
Parameter bands worth remembering
- Small dress case: 26 mm to 28 mm across, 8.5 mm to 9.5 mm thick, 14 mm to 16 mm lug width
- Mid-size case: 36.5 mm to 37.5 mm, 9 mm to 10 mm thick, 18 mm lug width
- Large automatic: 40 mm to 40.5 mm, 9.5 mm to 11 mm thick, 20 mm lug width
- Movement: Miyota 9015 or Sellita SW300 class for thin cases, 2813 only if you accept extra thickness
- Crystal: sapphire, roughly 1.5 mm to 2 mm, inner AR coating
- Water resistance: dress watches are rated around 3 bar, so no swimming and no showering
Pitfalls
- Stock photos reused across listings. Insist on dated photos of the exact unit with a card in frame.
- Size inflation. A 40 mm watch sold under a 27 mm title is the most common switch in this segment.
- "Swiss made" printing on a case that was never near Switzerland.
- Grade labels like AAAAA or mirror-grade, which mean nothing without a movement name.
- Gold plating that is measured in microns on paper and wears through in months on the crown and lugs.
- QC images that show a different dial colour from the one you ordered.
FAQ
Is a fake Portofino 27 a better buy than the 37 mm version?
Only if the small case suits your wrist. The 37 mm gives you more dial to look at and usually a wider choice of movements, but it wears very differently on a narrow wrist. Try a 27 mm to 28 mm dress watch on before you commit.
How can I tell a 27 mm case from a 40 mm case in photos?
Ask for a photo next to a coin or a ruler. Lug width is the tell: 14 mm to 16 mm lugs belong to the small case, 20 mm lugs belong to the large one.
Which movement should I request?
Miyota 9015 for value and thinness, Sellita SW300 class if you want a smoother wind and a closer feel to the original. Avoid unbranded movements with no model number.
Can I wear it in water?
Treat any dress replica as splash resistant at best. Gaskets on inexpensive cases are not tested, and a 3 bar rating is not a swimming rating.
Why do two sellers list different thicknesses for the same model?
Different movements and different case suppliers. The thinner figure is usually the one with a Miyota or Sellita inside, and the thicker figure is a 2813 build.