The first question to settle is not which seller, but whether the case was built around a hand-wound movement. Reference IW545150 is a time-only Portuguese with small seconds at 9 and a slim profile, and most weak replicas fail on that single point. They hide an automatic movement inside a case copied from a winding watch, so the finished piece sits 3 to 4 mm too thick, feels top heavy, and reads wrong from across a table. Before you discuss price or shipping, ask for case thickness in millimeters and a clear photo of the movement with the caseback removed.
What the IW545150 reference actually is
Reference 545150 belongs to IWC's Portuguese Hand-Wound family, a line defined by a large round case, an open dial, applied numerals, leaf shaped hands, and a small seconds subdial at 9 o'clock. It is a winding watch. It is not an automatic and not a chronograph. That matters because the whole character of the Portuguese comes from proportion: a wide but thin case, a dial with room to breathe, and hands long enough to reach the printed track. Confirm the exact variant against published specifications first, since some sellers quote the wrong reference number and then ship a generic Portuguese style watch.
What to look for, in order
Case and lugs
Ask for three measurements: diameter, thickness, and lug width. Genuine proportions land near 42 to 43 mm across and roughly 10 mm thick, with a lug width close to 22 mm and a polished bezel over a brushed mid case. A replica that calipers at 13 mm or more has an automatic donor inside. Look at the lug curve as well. Cheap cases hold the lugs flat and leave a visible gap at the strap, while a good case arcs down and follows the wrist.
Dial, hands, and subdial
Check four details. The subdial should sit centered at 9, not drifting toward 8 or 10. The printed track should be thin and even, with no blurring under magnification. The applied numerals should sit level and catch light at the same angle. The hands should be leaf shaped and finished to match the variant, not generic batons. Zoom in on the small seconds hand, because it is the part counterfeit makers stamp most crudely.
Movement
A watch in this style should be hand-wound, so rotor noise when you shake it is a red flag. Request a movement photo, a jewel count if the seller knows it, and a power reserve claim. A winding caliber in this class should hold a wind for at least 40 hours. Decoration matters less than function: stripes printed on a flat plate are cosmetic, while a movement that keeps time within a few seconds a day is not.
Crystal, crown, and strap
Domed sapphire with slight distortion at the edge matches the original look. Flat mineral glass looks wrong and scratches early. The crown should be signed, sized to the case, and wind without grit. Straps are the cheapest part to swap, so do not let one decide the purchase, but check whether the lugs take a standard 22 mm strap or a proprietary fit.
Parameter bands that separate the tiers
- Diameter: 42 to 43 mm reads correct. Under 41 mm or over 44 mm is a visible miss.
- Thickness: 10 to 11 mm suggests a hand-wound build. 13 mm and up points to an automatic donor.
- Lug width: 22 mm, standard for this case size.
- Subdial: small seconds at 9. A date at 3 or a chronograph layout means a different reference.
- Power reserve: 40 hours or more from a winding movement.
- Water resistance: treat any claim above 30 m as unproven unless the gasket and caseback construction are described.
- Weight: a thin steel case should feel light for its size. Heft usually signals a thick case.
Pitfalls that cost buyers the most
- Stock photos of a genuine watch. Ask for timestamped photos of the actual unit you will receive.
- Swiss made claims with no movement photo. A dial label proves nothing.
- No pre shipment inspection photos. A seller who will not show the exact watch before it ships is a seller you cannot judge.
- Gold plating sold as solid gold. Ask about the base metal and the plating thickness.
- Seller supplied certificates. Papers for a counterfeit carry no value and unlock no service.
- Customs and legal exposure. Importing counterfeit goods is illegal in the United States and shipments can be seized. There is no manufacturer warranty, no authorized service, and no resale market. Budget for the possibility of losing both the watch and the money.
FAQ
Is a replica IW545150 worth buying?
Only if you accept the trade. You get the look at a fraction of the cost of a genuine Portuguese, and you give up warranty, maker service, resale value, and legal certainty. If those matter to you, save for the real thing or pick a legitimate watch in a similar style.
How do I tell a good replica from a bad one using photos?
Thickness, movement type, and subdial placement. If a seller cannot or will not supply those three, the gallery is decoration.
Do these watches hold value?
No. Counterfeit watches have no collector market and no trade in value, so treat any money spent as gone.
Can a local watchmaker service one?
Often yes for common Asian movements, since parts are cheap and widely available, but many shops decline to work on counterfeit watches. Ask before you buy, not after the watch stops.
Bottom line
Judge the case first, the movement second, and the seller last. A replica IW545150 that is thin, hand-wound, and correctly proportioned will read right on the wrist even under a close look. One that is thick and automatic never will, no matter how clean the dial printing is.