Buy the replica IW371478 for its proportions and dial execution, not for the name engraved on the rotor. The Portugieser Chronograph is a dress watch with a chronograph inside: a wide crystal, a thin bezel and a large open dial with two stacked subdials. That layout leaves nowhere to hide. Printing errors, flat hands, cloudy crystals and soft case edges all show at arm's length, before anyone looks at the movement. Put your budget into the sample with crisp dial text, faceted leaf hands and a correctly domed sapphire, and treat the movement as the second question. If a seller opens with a claim of a Swiss movement and sends only wide, soft-focus photos, move on.
What to look for
Dial and printing
The dial is the whole watch here. Check that the applied numerals sit level, that the minute track is continuous and evenly spaced, and that the text above the subdials is sharp at 10x. On a copy, the giveaway is thin or smeared print on the small lines and a logo that sits too high or too low. Ask for a straight-on macro shot in daylight, not a studio render.
Hands and subdials
Leaf hands should show a visible central crease and a clean bevel along both edges. Flat stamped hands read dull and dark at an angle. The two subdials should sit vertically at 12 and 6, with hands that reach the track rather than stopping short. Look at the subdial rings: printed rings look acceptable, applied or recessed rings look better.
Case, crystal and finish
Case flanks should be brushed with polished bevels, and the transition between the two should be a defined line, not a soft blend. The crystal should be domed, slightly box-shaped and clear at the edge. A flat or hazy crystal is the fastest way to spot a budget build. Feel matters too: pushers should start, stop and reset with a firm click and no grinding.
Movement and caseback
A display back shows the movement, so finishing counts. Look for a column wheel on chronograph calibres that should have one, perlage on the bridges, and blued screws that sit flush. Engraving on the caseback rim should be deep and even. Shallow laser etching with a grey haze is a common shortcut.
Parameter bands to accept
- Case diameter: 40.5 to 41.0 mm. Anything at 42 mm or above changes the look on the wrist.
- Thickness: 12.5 to 13.5 mm. Much thinner usually means a quartz or a flat crystal.
- Lug width: 20 mm. Confirm this before ordering straps.
- Crystal: domed sapphire with anti-reflective coating on both faces.
- Water resistance: rated 3 bar on the original, so treat any copy as splash resistant only.
- Subdial layout: running seconds at 6, 30-minute counter at 12.
Pitfalls
- Photos that are dark, angled or heavily edited to hide dial print and case edges.
- Sellers who quote a movement name but never show the caseback in focus.
- Unrequested "upgrades" such as thicker cases or wrong-colour dials that drift from the reference.
- Straps that look stiff and plasticky in photos; budget for a replacement alligator-grain strap.
- No return window. A reputable seller shows the actual unit and accepts returns.
FAQ
Is the IW371478 a chronograph or a time-only watch?
It sits in the Portugieser Chronograph family, a two-register chronograph. Confirm the aperture layout, including whether there is a date window at all, against an official image of this exact reference before you commit.
How much should I expect to spend?
Prices track dial quality and movement type. Entry samples use generic chronograph movements; better builds use a column-wheel clone with closer finishing. Ask what is inside rather than accepting a tier label.
Will a replica keep accurate time?
Most chronograph clones run within 10 to 20 seconds a day when regulated. Ask for a timegrapher photo showing rate, amplitude and beat error if the seller has one.
Can I wear it swimming?
No. The rated depth on the original is modest and a copy gives no guarantee. Keep it away from water beyond light rain.