A replica IW545128 copies a watch from the IWC Portuguese Hand-Wound family. Copies sell in three tiers, from about $100 to $600. Check four things before you pay: measured case diameter, the sub-seconds hand at 6 o'clock, the movement type, and the caseback engraving. Ask for photos of the actual watch, not stock images.
What the reference number tells you
IWC reference numbers carry six digits after "IW". The first four digits name the family. 5451 is the Portuguese Hand-Wound line. The last two digits, 28 in this case, name a case and dial combination inside that family. Case diameter for the 5451 family is listed at 44 mm in dealer and auction data. The layout has a small seconds sub-dial at 6 o'clock and applied numerals.
Public photos of the exact "28" variant are thin on the ground, and many sellers mix in photos of other 5451 versions. Confirm the dial colour and case metal of that variant with IWC or an authorized dealer before you compare replicas side by side.
Case and dial checks
- Diameter: measure across the case at 9 to 3, crown excluded. The target is 44 mm.
- Thickness: a slim case points to a hand-wound movement. A thick case points to an automatic or quartz movement inside.
- Sub-dial: the small seconds hand sits at 6 o'clock. On a mechanical movement it sweeps in small steps.
- Dial text: sharp under a loupe. Thick or blurred lettering marks a low tier copy.
- Numerals: applied, raised above the dial surface, with a beveled edge.
- Caseback: engraving depth should be even. Laser etching looks shallow and grey.
- Crystal: sapphire shows no rainbow tint at an angle. Mineral glass does.
Movement
A hand-wound watch has no rotor. Ask for a photo of the movement, or look through a display caseback. A rotor means the replica does not match the original layout. Some copies hide a rotor under a solid back, which adds 1 mm to 2 mm to the case height.
Quartz versions sit at the bottom of the market. A quartz seconds hand jumps once per second. A mechanical hand-wound seconds hand moves in small increments.
Price tiers
Entry tier: $100 to $150. Quartz movement, plated case, mineral glass. Mid tier: $250 to $400. Mechanical movement, 316L steel case, sapphire on some units. Top tier: $450 to $600. Modified or clone mechanical movement, sapphire, leather strap with matched hardware. Prices above $700 for this reference are hard to justify.
Questions for the seller
- Which movement is inside, and can you send a photo of it running?
- What are the measured case diameter and thickness?
- Is the crystal sapphire or mineral?
- Is the case solid 316L steel or plated?
- Can you photograph the exact unit you will ship?
- What is the return window if the watch arrives with a fault?
Where replicas fall short
The movement finish is the widest gap. Original IWC calibres show striped bridges, blued screws and polished bevels under a loupe. Copies print or stamp these patterns. Caseback engraving is shallower. Strap leather and buckle finish also sit below the original standard.