Answer first
A fake IW544794 usually fails on details you can see with a loupe and a caliper: shallow or blurry caseback engraving, soft dial print, roughly finished hands, a movement that does not match the reference, and paperwork whose serial does not match the watch. Check the reference and serial engraving, measure the case, weigh the watch, inspect the dial and movement, then have a watchmaker confirm it before money changes hands.
Prerequisites
- 10x loupe or a macro lens on a phone
- Digital caliper that reads to 0.1 mm
- Kitchen scale that reads to 0.1 g
- Bright, diffuse lamp and a lint-free cloth
- Archive photos of a known-genuine IW544794 for side-by-side comparison
Step-by-step checks
- Place the watch on a clean surface under a bright lamp and photograph the dial straight on.
- Read the reference number on the caseback and confirm it reads IW544794 in the same font, weight, and spacing as archive photos of a genuine example.
- Compare the serial number engraving with known-good photos, checking depth, edge sharpness, and whether the metal around the digits is polished or disturbed.
- Measure case diameter and thickness with the caliper and compare both figures with the published specification for the reference.
- Weigh the watch on the scale and record the figure, then compare it with the weight range reported by owners of genuine examples.
- Examine the dial print with the loupe, looking at the logo, the minute track, and the text below center for bleeding edges, uneven spacing, or paint sitting on top of the lacquer.
- Tilt the watch under the lamp and inspect the hands for flat, unpolished sides, rough bevels, and lume that sits proud of the metal.
- Open or view the display back and check the movement finish, the engraving on the bridges, and whether the movement number matches the case number on the record.
- Wind and set the watch, then check crown threading, crown position clicks, date or complication change, and how the hands align at 12.
- Lay the warranty card, booklet, and box next to the watch and confirm that the serial on the card matches the caseback and the movement.
- Take the watch to an IWC service center or an independent watchmaker and ask for a written authenticity opinion before you pay.
Red flags that end the deal
- Seller refuses to open the caseback or allow an inspection.
- Reference digits are stamped rather than engraved, or the font differs from archive photos.
- Serial on the card, caseback, and movement do not agree.
- Weight is more than a few grams off the accepted range for the reference.
- Price sits far below the market for a complete, documented example.
- Photos are stock images or are too soft to show engraving.
What to do next
Ask the seller for sharp macro photos of the caseback, the movement, and the paperwork before you travel to see the watch. Compare each photo against a verified example of the same reference. If anything does not line up, walk away. A second opinion from a watchmaker costs little compared with the price of a misrepresented watch.