The short answer

A replica IW545168 is worth buying only if three things survive a close look: the case profile, the dial printing, and the finish on a hand-wound movement you can see through the back. Most copies under about $300 fail at the second one. The dial is where the money goes on this reference, and it is also the cheapest place for a factory to cut corners.

If a seller cannot send a straight-on macro of the dial and a shot of the movement running, stop there. Photos of the real thing are not a substitute for photos of the watch in the box.

What this reference is, and why it gets copied

IW545168 sits in IWC's Portugieser family, the line built around a large round case and a dial that is mostly empty space. That emptiness is the whole appeal. A clean dial with applied numerals and thin hands looks simple, and it is hard to fake well, because there is nothing to hide behind. No busy layout, no textured bezel, no gem setting. Just proportion, printing, and polish.

It is also a hand-wound watch with a display back, which means the movement is on show and gets judged along with the face. That combination is what separates a good copy from a lazy one.

Case and crystal

  • Case flank: the genuine has a soft, continuous curve from lug to lug. Copies often show a flat milled band or a small step you can feel with a fingernail.
  • Lug tips: rounded and even on both sides. Sharp, knife-edged lugs are a giveaway in the hand, not just in photos.
  • Crystal: slightly domed sapphire. Check for a milky halo at the edge and for anti-reflective coating that reduces reflections instead of tinting the dial blue.
  • Thickness: ask for a measured number with calipers. Thin cases are expensive to make, so a copy that is a millimeter or two too tall is common.

Dial and hands

  • Printing: under 10x magnification, genuine text has crisp edges. Replica text looks slightly bold or fuzzy at the same power.
  • Applied numerals: look at thickness and polish. Sharp inner corners and a mirror finish are what you want; rounded, soft edges mean a cheaper stamping.
  • Hands: check the taper at the tip and whether the seconds hand sits level. A hand that scrapes the dial or floats too high is a quick tell.
  • Dial color: a silver-plated dial shifts from warm to cool as it turns. A flat gray that never changes is printed, not plated.

The movement is the deciding factor

Hand-wound means you feel the watch every morning, so winding quality matters more here than on an automatic. A decent copy winds smoothly with light, even resistance and stops cleanly at the end of its travel. A poor one feels gritty, grinds near the stop, or has a crown that wobbles.

Ask for a timegrapher photo showing rate, amplitude, and beat error. Any serious seller has one. Numbers in the range of plus or minus ten seconds a day with reasonable amplitude are fine for a replica; a blank stare in response is not.

Caseback, engraving, and strap

The caseback text should be crisp with even letter spacing, and the sapphire window should sit flush. On the strap, look at the stitching pitch and the edge paint. Genuine alligator has a visible scale pattern that changes across the surface; stamped calf leather looks uniform and slightly plastic.

The buckle is small and easy to overlook. Check the engraving depth and whether the pin lines up square with the frame.

Price tiers, roughly

  • Under $250: plated case, printed dial, movement that looks nothing like the real thing. Fine if you only want the silhouette.
  • $300 to $550: the sensible middle. Better dial printing, sapphire crystal, acceptable winding feel.
  • $600 and up: case finishing and movement decoration start to hold up under a loupe. This is where the good factories sit.

Red flags

  • Stock photos only, no real-world shots of the actual unit.
  • Claims of Swiss-made parts at Far East prices.
  • No timegrapher numbers and no answer when you ask for them.
  • No stated return window for a misaligned marker or a scratched crystal.

Questions to ask before paying

  1. Can you send a macro of the dial and a photo of the movement running?
  2. What are the measured case diameter and thickness?
  3. Which movement is inside, and can my watchmaker service it?
  4. What happens if the watch arrives with a crooked marker?

Bottom line

Buy the dial and the case, not the paperwork. A replica IW545168 that gets the printing and the profile right will look convincing on the wrist from a normal distance, and that is the realistic goal. It will not fool a dealer with a loupe, and it will not hold value. Treat it as a good-looking object at a fair price and you will be fine.