What a fake Portugieser Automatic 31 actually is

A fake Portugieser Automatic 31 is a replica of IWC's Portugieser Automatic line, and quality ranges from convincing copies with dependable third-party movements to rough pieces whose dials do not match the listing photos. The "Automatic 31" part is a seller's label, not an official IWC reference, so treat it as a description of a look rather than a promise about specifications.

Where the "Automatic 31" name comes from

IWC names its Portugieser Automatic models with reference numbers and calibre designations, and the brand's own catalog is the only reliable way to confirm a given specification. "Automatic 31" does not appear there. In practice, sellers use the phrase as shorthand for a Portugieser-style dress watch with a small seconds subdial, leaf hands, and a railroad minute track, typically around 42 mm on the genuine references.

Because the number is not standardized, two sellers can list the same phrase and ship very different watches. A 31 mm case would be unusual for this line, so confirm the diameter and thickness in writing before you order.

How replica quality tiers compare

• Entry tier: stamped case, mineral glass, printed dial markings, and a movement that can drift by minutes a day.
• Mid tier: 316L stainless steel case, sapphire or coated glass, applied indices, and a third-party automatic with a power reserve in the 36 to 40 hour range.
• Upper tier: closer case profile and lugs, decorated bridges and rotor, sharper dial printing, and a date window that lines up with the aperture.

Most complaints about a fake Portugieser Automatic 31 come from buyers who paid mid-tier money and received an entry-tier watch. Photos and short video clips are the only way to close that gap.

Details worth inspecting before you buy

• Case diameter, thickness, and lug-to-lug measurement against the genuine reference.
• Subdial position and size, plus the shape and font of the date window.
• Hand length, finish, and whether the tips reach the minute track.
• Crystal type: domed sapphire versus flat mineral glass.
• Caseback engraving depth and serial placement.
• Strap stitching and buckle finishing, which is often where corners get cut.
• Water resistance claims, which should be treated as marketing on any replica.

What is likely inside the case

At this price point, expect a third-party automatic rather than anything resembling the in-house calibre used by IWC. Ask for a clear photo of the movement, a video of the seconds hand sweeping, and timegrapher readings if the seller has them. A seller who will not show the movement is usually hiding a quartz conversion or a badly finished rotor.

Legal and practical risks

Counterfeit watches are illegal to import and sell in the United States and many other countries, and shipments can be seized at the border. Buyers also get no brand service, no spare parts, and no warranty that means anything. Reselling a fake as genuine is a separate legal exposure.

• No manufacturer servicing or parts support.
• Seizure risk on cross-border shipments.
• Resale value near zero, and resale as genuine is a legal problem.
• Payment disputes are hard to win with sellers who operate outside normal retail channels.

If the goal is the look rather than the logo, a homage from a legitimate microbrand delivers similar styling with a real warranty.

Listing red flags

• Stock photos only, with no image of the actual watch in hand.
• No movement photo, or a photo that is clearly reused from another seller.
• Prices far below the rest of the market for the stated tier.
• Pressure to pay by wire or crypto with no refund path.
• Vague answers about case diameter, crystal type, or return policy.

Bottom line

The best protection against a disappointing fake Portugieser Automatic 31 is to slow down: confirm the measurements, insist on movement photos, and accept that the name is a marketing label rather than a specification. Understanding what the label does and does not mean is the difference between a watch you enjoy and one you regret.