There is no such watch as an IWC Portugieser Automatic 31. IWC's current catalog has the Portugieser Automatic 40 and the Portugieser Automatic 42. No 31mm reference exists in that line. So when a listing uses "Portugieser Automatic 31," that number came from the seller, not from the factory floor in Schaffhausen. That is the first thing worth knowing, because it tells you how much care went into the listing you are reading.
portugieser automatic 31 replica watch
What the real Portugieser Automatic is
IWC's Portugieser Automatic 40 measures 40mm and runs the in-house caliber 82200, a 4Hz movement with about 60 hours of reserve. The 42mm version runs caliber 52010 or 52011 with Pellaton winding and a 7 day power reserve. Both share the same visual DNA:
- Leaf shaped hour and minute hands
- Small seconds subdial at 6 o'clock
- Railroad style minute track
- Applied numerals on a matte or sunburst dial
- Domed sapphire crystal and a display back
That layout is the whole point of the design. It is a 1930s deck watch look, and it survives on proportion, not on logos.
portugieser automatic 31 replica
Where the "31" comes from
I have watched this naming drift for a while. It usually traces back to three places.
portugieser automatic 31 replica watch
- Machine translation from Chinese listings, where model codes get flattened into numbers.
- Seller shorthand for a batch size or a case measurement that was never official.
- Confusion with other 31mm watches, which in this price bracket are almost always women's pieces.
None of those are IWC reference numbers. If a seller cannot get the model name right, ask yourself what else they got wrong.
What replica Portugiesers do well, and what they do not
Replica cases and dials have gotten decent. Printing is sharper than it was five years ago. The tells moved elsewhere.
The movement is the giveaway. An in-house IWC caliber has a specific bridge architecture, a specific rotor, and specific finishing under a loupe. Most replicas run a generic Chinese movement with a decorative plate bolted on top. It may beat at 28,800 vibrations per hour like the real thing, but the 7 day power reserve of the 42mm model is not something you get from a $200 movement. Wind it, set it down, and check it 24 hours later. That test costs nothing.
The small seconds subdial is the second tell. Its position and diameter shift by a hair on many copies, and the dial looks slightly off without anyone being able to name why.
Third, weight and feel. Real Portugiesers have a solid precious-metal or steel case with crisp edges. Copies often feel light and the crown action is gritty.
The US legal picture
Trafficking in counterfeit goods is a federal crime, and it carries prison time. Buying for personal use is a lower risk than selling, but it is not zero risk. US Customs and Border Protection seizes and destroys counterfeit imports, and you do not get your money back. There is no warranty, no service network, and no parts supply. Resale value is close to nothing.
Watch for phrases like "1:1" or "super clone." Those are marketing words with no standard behind them. Two sellers using the same phrase can be shipping completely different watches.
If you just want the look
There are homage brands that build the small seconds, leaf hands, and railroad track without stamping someone else's name on the dial. They are legal, they are serviceable, and they cost less than a mid tier replica. A used genuine Portugieser Automatic is the other honest route, and it holds value.
The name in your search bar does not match a real watch. Treat that as your first filter.