The short answer
A replica Portugieser Small Seconds copies the IWC Portugieser Automatic 40, the 40.4 mm three-hander with the running seconds dropped to a sub-dial at 6 o'clock. The better versions get the case shape, the thin bezel, and the leaf hands close enough that nobody clocks it from across a table. The cheap ones miss three things: dial printing, sub-dial alignment, and case thickness. Those are also the three things you notice every time you look down at your own wrist.
What makes this design hard to copy
The original runs IWC's calibre 82200, a Pellaton-wound automatic with a 60-hour power reserve. It is a wide movement in a wide case, and that geometry is why the small seconds sits at 6 with breathing room around it instead of looking crowded. Replicas rarely use anything like it. Most run a Japanese or Chinese automatic with an added sub-seconds module, or a decorated plate that imitates the real finishing. Expect roughly 40 hours of reserve, a rotor you can hear in a quiet room, and a crown that feels lighter between your fingers than the real one. None of that shows up in listing photos, which is why sellers talk up the movement and gloss over the case.
Case and proportions
I measure before I judge. The genuine case is 40.4 mm across with a slim bezel, so the dial reads large for its size. A good replica lands on that diameter and stays within a few tenths of a millimeter on height. A bad one pads the case to hide a thick movement, and the whole watch starts to look like a puck on the wrist.
- Diameter: should sit at 40.4 mm, not 42 or 39.
- Thickness: thin enough to slide under a cuff. Extra bulk usually means a movement spacer.
- Lugs: short, curved, and polished on top with brushed flanks. Sharp lug edges are a giveaway.
- Crown: signed, well cut, and easy to grip without digging into your finger.
Dial, handset, and crystal
The dial is where the money goes. Applied numerals should sit flat and catch light along their edges, not float or lean. Printing needs to be thin, black, and lined up with the sub-dial ring, since a printed minute track that drifts off-center is the first thing a careful eye catches. On the sub-dial itself, the small hand should point dead at 12 when the seconds are at zero. If it rests anywhere else, the module was assembled without care and the rest of the watch probably got the same treatment. The hands should be leaf-shaped, polished, and set at the right height above the dial. A sapphire crystal with inner anti-reflective coating is standard on the good versions; mineral glass is not, and it fogs and scratches.
Movement options you'll actually see
Two families dominate. The first is a Japanese automatic with a small-seconds module bolted on. It is reliable, easy to service, and keeps decent time, but it is thicker and the seconds hand can stutter. The second is a Chinese automatic dressed with Geneva stripes and an engraved rotor. It looks better through a display back and behaves less predictably over years. Either can be fine. What matters is that the seller tells you which one you are buying instead of calling everything an in-house clone.
What I check before buying
- Ask for real photos, not renders, including a straight-on dial shot.
- Request the case measurement with calipers if the seller has them.
- Confirm the crystal material and coating in writing.
- Ask about the movement by name, not by marketing language.
- Check the return window. Anything under a week is not a real window.
Living with it
Treat it like any automatic. Wind it gently, keep it away from magnets, and have it serviced when it starts losing more than a few seconds a day. Water resistance on replicas is optimistic at best, so take it off before swimming or showering regardless of what the back says. A strap swap does more for the look than almost anything else, and a decent alligator-grain leather strap in dark brown or black suits the dial better than the stock one usually does.
Is a replica identical to the genuine watch?
No. Top-tier replicas get the outside close, sometimes very close, but the movement, finishing, and long-term parts support are not the same. Buy with that in mind.
Is the small seconds version harder to fake well?
Yes. The sub-dial adds a module to the movement and a printed ring to the dial, and both create alignment problems that a plain center-seconds watch never has.