A replica Portofino 45 stands or falls on two things: the case must genuinely measure about 45 mm across with the thin profile of a dress watch, and the dial must keep the Roman numerals, leaf hands, and subdial spacing of the reference it copies. If a seller will not state the measured diameter, thickness, lug width, and movement type in writing, treat the listing as unknown. Buy the specification, not the photograph.

What to look for

Case and proportions

A 45 mm dress watch is already a large object on most wrists. The bezel should be narrow, the lugs should curve down toward the wrist, and the crown should sit flush rather than protrude on a long stem. Ask for a photo of the caseback on a ruler or caliper. Sellers who only show angled shots are usually hiding a thick case or slab-sided lugs.

Movement and winding

The original in this size class is a hand-wound piece with a small seconds or power reserve display. Many replicas swap in an automatic movement, which adds a rotor and roughly 2 to 4 mm of thickness. That changes how the watch sits under a cuff and how the subdial is placed. Decide whether you want the correct winding feel or the convenience of an automatic, then confirm which one you are buying.

Dial, hands, and crystal

Look for applied indices or crisp printed Roman numerals, hands with a clean leaf shape, and subdial text that is legible under magnification. A sapphire crystal with inner anti-reflective coating keeps a 45 mm dial from washing out in daylight. Mineral glass on a dial this size looks flat and scratches within months.

Strap and hardware

Alligator-grain leather is standard. Check the stitching density, the lining material, and whether the buckle tang matches the case finish. Thin, cardboard-stiff straps are the fastest sign of a cheap build.

Parameter bands worth checking

  • Case diameter: 44.5 to 45.5 mm measured across the case, not the crystal
  • Thickness: roughly 11 to 13 mm for a hand-wound build; over 14 mm usually signals an automatic movement squeezed into a thin case
  • Lug width: commonly 22 mm in this size class, so confirm before ordering replacement straps
  • Lug to lug: about 52 to 54 mm, which is the number that decides whether it fits your wrist
  • Crystal: sapphire, with anti-reflective treatment on the inside surface
  • Water resistance: treat every replica as splash resistant only, regardless of what the caseback says

Common pitfalls

  • Listing photos lifted from the genuine product page rather than shot on the actual watch
  • Dial text claiming Swiss origin on a watch built with an Asian movement, a labeling claim regulators take seriously
  • Subdials positioned to fit an off-the-shelf movement instead of the original layout
  • No stated return window, no tracking, and no payment protection
  • Customs seizure: counterfeit goods can be confiscated at import, and you may lose both the watch and your money

FAQ

Is a 45 mm case too large for daily wear?

Measure your wrist first. At 52 mm lug to lug, this size suits wrists of roughly 7 inches and up. Below that it will overhang and wear uncomfortably.

Will a replica hold value?

No. There is no secondary market for counterfeit watches, and resale is often treated as a legal problem rather than a transaction.

Can a watchmaker service it?

Independent repair shops may decline to work on counterfeit goods, and parts are rarely available outside the seller's own supply chain. Assume no service support.

Is buying one legal in the United States?

Counterfeit goods infringe registered trademarks, and import shipments are subject to seizure. Buying for personal use does not make the item lawful to import or resell.

Weigh the specification questions above against those limits before you order. A replica can copy a silhouette, but it cannot copy the movement finishing, the service network, or the legal standing of the genuine article.