Fake Portugieser 46mm: The Short Answer
Most fake Portugieser 46mm watches fail in three places: the subdial spacing, the case thickness, and the movement. The genuine IWC Portugieser Automatic 46mm (ref. IW5007) has a 42.3mm case, not 46mm, so the 46mm label often refers to the dial opening or a seller's loose description. Real ones run IWC's 52010 calibre with a 7-day power reserve and a Pellaton winding system. Fakes usually use a modified ETA or a Chinese clone with a 40-hour reserve. If the power reserve indicator moves fast, it's a fake.
Why the 46mm Number Matters
IWC makes a Portugieser Automatic 42.3mm and a Portugieser Chronograph 41mm. The 46mm you see in listings is often the case diameter of the Portugieser Perpetual Calendar or a seller's typo. Some replicas are built on 46mm cases from other brands, then fitted with a Portugieser-style dial. That creates a watch that feels too big for the design. Genuine Portugieser dials have a certain balance: the subdials sit at 3 and 9, the power reserve at 3, small seconds at 9. On fakes, the subdials often sit too close to the center or too far out.
Quick Tells of a Fake Portugieser 46mm
- Subdial hands that don't align with the printed track. Real ones are crisp and sit just above the dial.
- Case thickness over 14mm. Genuine 42.3mm is about 14.2mm, but many fakes push 15mm or more because of the movement spacer.
- The power reserve indicator jumps instead of sweeping. Real 52010 has a smooth, gradual action.
- Date window font and placement. Real date sits at 6 o'clock with a matching dial color; fakes often use a white date wheel on a silver dial.
- Strap quality. Genuine alligator feels soft and has a slight curve; fakes use embossed leather that stays stiff.
Replica Tiers for the Portugieser 46mm
Not all fakes are the same. The low end runs $80 to $150 and uses a quartz or cheap automatic. The mid tier runs $200 to $400 with a decorated Chinese movement. The top tier runs $500 to $900 and can include a clone of the 52010 with a working power reserve. Even the best fake won't match the 7-day reserve or the Pellaton winding feel. If a seller claims 1:1 and shows a 46mm case that matches the genuine 42.3mm, they're lying about the size.
What to Check Before You Buy
- Ask for a side profile photo. Look for the caseback engraving depth and the crown shape.
- Request a video of the power reserve indicator moving. If it snaps, walk away.
- Check the lug width. Genuine is 22mm on the 42.3mm model. Many fakes use 20mm.
- Look at the dial printing. International Watch Co. should be sharp, not fuzzy.
If you want a fake Portugieser 46mm that feels close, focus on the case profile and the dial layout first. Movement comes second, because you'll rarely see it. But if the seller can't tell you the actual case diameter, that's your biggest clue.