A replica Portugieser 7 Day copies the IWC Portugieser Automatic ref. 5007, the model built around a seven-day power reserve with sub-seconds at 9 o'clock and a power reserve indicator at 3 o'clock. Good replicas reproduce the 42.3 mm case, the leaf hands, the applied numerals and the balanced dial layout. They do not reproduce the genuine twin-barrel 52010 calibre, so real autonomy lands closer to 38 to 45 hours. Judge the watch on case and dial accuracy, and treat the "7 day" label as a model name rather than a specification.
What the genuine reference sets as the benchmark
Compare any replica against the published numbers for ref. 5007 before you look at photos of the copy.
- Case: 42.3 mm diameter, about 14.2 mm thick, stainless steel or precious metal
- Dial: applied Arabic numerals, leaf-shaped hands, sub-seconds at 9, power reserve arc at 3, date window at 6 on most versions
- Movement: calibre 52010, twin barrels, Pellaton winding, 168 hours of reserve
- Crystal: domed sapphire with antireflective coating on both faces
- Caseback: sapphire exhibition back held by four screws
What separates a usable replica from a throwaway
The gap sits in three places: case finishing, dial printing and the movement underneath. A strong copy has crisp brushed flanks with polished bevels, a dial that sits flat with no dust under the crystal, and a movement that hacks and winds without grinding. A weak copy shows soft lugs, off-centre sub-dial printing and a rotor that rattles.
How to inspect a replica Portugieser 7 Day before you pay
- Measure the case across the bezel without the crown. Anything outside 42.0 to 42.6 mm changes the wrist presence.
- Check the thickness with calipers. Above 15 mm the watch sits tall on the wrist and the caseback profile looks wrong.
- Look at the sub-seconds hand at rest. It should align exactly with the 60 mark, not drift between indices.
- Wind the crown 30 turns and set it down. Log how many hours pass before it stops, then compare that figure with the seller's claim.
- Rotate the power reserve hand through its full arc. It should move in a smooth sweep with no jumps or sticking.
- Inspect the printing under a loupe at 10x. Edges should be sharp, with no ink bleed on the numerals or the minute track.
- Test the crown for wobble in the winding position, then pull to the setting position and confirm the hacking seconds stop cleanly.
- Ask for a photo of the movement through the caseback. A decorated rotor with Geneva stripes and engraved lettering signals a higher grade build.
Movement options you will actually find
Most replicas run a modified Asian automatic with a decorative plate that mimics the 52010 layout. A smaller number use a clone with a working power reserve complication. Ask which one is fitted, because the decorative version shows a reserve hand that moves on a timer rather than on actual mainspring tension. Treat any listing that promises a true seven-day reserve at this price level with doubt.
Dial, printing and hand finishing
Look at the rail track, the numeral shapes and the hand bevels. Genuine leaf hands taper to a fine point and catch light along a polished bevel. Replicas often use flat stamped hands with a matte edge. The dial colour should read as a clean silver-plated white or a deep lacquered blue, not a flat grey or a purple-shifted navy.
Strap, clasp and caseback
Alligator-grain leather is standard. Check the stitching density, the thickness at the lugs and whether the deployant clasp closes with a firm click. The caseback screws should sit flush and take a full turn without cross-threading.
Realistic limits after delivery
Do not swim with the watch unless a pressure test confirms the seals. Have a watchmaker check the gaskets and regulate the rate within the first month. Keep the crown screwed down, store it off the winder if you wear it daily, and expect a service interval shorter than the genuine article.