A fake Portugieser 42mm is a copy of the IWC Portugieser Automatic, the 42.3 mm dress watch with small seconds at 9 o'clock, a power reserve dial at 3, and a date window at 6. Three checks answer most questions: case height, subdial spacing, and caseback engraving. A genuine one sits near 14.5 mm thick and runs for 7 days on a full wind. Most copies fail at least one of those three.
What Does "Portugieser 42mm" Refer To?
The 42mm tag points to the Portugieser Automatic, the reference family IW5007. IWC specs the case at 42.3 mm across and about 14.5 mm tall, so it wears large for a dress watch without turning into a sports piece.
IWC also builds a Portugieser Chronograph at 41 mm with two pushers. Some sellers mix the names. A listing that promises a "Portugieser 42mm chronograph" has the facts wrong before you see a photo.
- Case: 42.3 mm steel or gold, polished bezel, slim lugs
- Dial: small seconds at 9, power reserve track at 3, date at 6
- Movement: calibre 52010, Pellaton winding, twin barrels
- Power reserve: 168 hours, or 7 days
- Crystal: sapphire front and back, so the movement stays visible
Why Case Thickness Exposes Most Copies
Replica makers shape a case that matches photos but not micrometers. A copy built on a thin Asian automatic often lands at 12 to 13 mm, which looks flat next to a real one. A copy built on a thick movement can hit 16 mm and sit like a hockey puck on the wrist.
Measure with calipers at the center of the caseback, not at the crystal. Genuine examples come in between 14.3 and 14.7 mm depending on the reference and the case metal.
Dial and Subdial Details Worth Checking
The dial is where cheap copies show their hand. Printing on a real Portugieser is thin and sharp, and the applied numerals catch light on their facets.
- Subdial spacing: the small seconds and power reserve rings should sit on the same 9 to 3 axis, an equal distance from the center.
- Date window: sized to the numeral, with a clean aperture and no white border.
- Power reserve scale: marked for 7 days. Copies often print a 40-hour scale or a decorative arc that never moves.
- Hands: leaf shaped, with a polished bevel down the center.
- Logo: applied on most references, printed on copies that skip the step.
The Movement Is the Hardest Part to Copy
Calibre 52010 uses Pellaton winding and two barrels to reach 168 hours. That architecture costs real money to reproduce, so most replicas run a generic 21,600 vph automatic with a 38 to 42 hour reserve.
Wind the watch, set it down, and check it after four days. A genuine Portugieser Automatic still runs. A copy with a 40-hour movement has stopped.
Look through the sapphire caseback too. A 52010 shows Geneva stripes, blued screws, and a skeletonized rotor with engraved lettering. Copies show stamped plates and a plain rotor.
Caseback Engravings and Reference Numbers
Engraving on a real caseback is crisp and deep, with even letter spacing. Copies show shallow lasering, soft edges, and fonts that drift between examples of the same model.
Reference numbers sit in the IW5007xx range, and each case carries a serial that appears nowhere else. Two listings with the same serial means at least one is fake.
Papers and boxes are easy to print. Treat them as a bonus, not proof.
Strap, Buckle, and the Small Parts
Genuine alligator straps carry branding on the lining and a signed pin buckle or folding clasp. Copies often ship with plain leather and a generic buckle, then get swapped before photos.
Ask for a photo of the buckle tang and the strap lining. Those two spots get skipped in most product shots.
What Do Fake Portugieser 42mm Watches Cost?
A steel Portugieser Automatic lists in the five-figure range at retail, and gold versions cost several times more. That gap is why the replica market exists at all.
Replica pricing splits into tiers. Quartz copies sell for under $100 and tick. Mid-tier automatics run a few hundred dollars. High-end 1:1 builds with a copied case and a decorated movement climb past $1,000.
The reverse test works too. Anyone selling a "Portugieser 42mm" for $400 and calling it genuine is selling a counterfeit. US law treats that as trademark infringement with civil and criminal penalties.
How to Check a Portugieser 42mm Before You Buy
- Measure the case with calipers. Expect 42.3 mm wide and about 14.5 mm thick.
- Wind it fully and time the reserve. A real one crosses four days with ease.
- Study the date window and subdial rings at arm's length, then up close.
- Compare the caseback engraving to reference photos of the same IW5007 number.
- Ask for a clear photo of the movement through the display back.
- Check the serial number against the listing text and the papers.
FAQ
Is a fake Portugieser 42mm easy to spot on the wrist?
From across a room, no. Up close, yes, once you know the three tells. Case thickness shows in profile, and dial printing shows under any light.
Do all fake Portugieser 42mm watches use the same movement?
No. Cheap builds use quartz or a basic automatic, while higher tiers use cloned or decorated movements. Power reserve behavior sorts them apart faster than a photo.
Can a watchmaker tell a fake Portugieser 42mm from a real one?
In most cases, yes, and within minutes. A watchmaker reads the movement finish, the winding feel, and the case machining together rather than one detail on its own.
What about the Portugieser Chronograph 41mm?
Different watch, different tells. It runs 41 mm with two pushers and a 68-hour in-house chronograph movement. Sellers who swap the names usually have the wrong specs on both.