The strongest pick for most buyers is a 41mm automatic copy of the Portugieser Chronograph with a real chronograph function, running seconds at 6 o'clock, and a minutes counter at 12. That dial geometry is the part most copies get wrong, so it drives the whole decision. Five criteria matter here: case size honesty, dial and hand geometry, movement behavior, crystal and case finishing, and the strap and clasp setup.

Quick answer: what to check before anything else

Ignore the sales wording and inspect the watch itself. The genuine Portugieser Chronograph line is defined by a slim-bezel 41mm case and a two-register dial, so a copy that misses either point will look off from arm's length.

  • Case measuring close to 41mm across, with lugs that curve rather than stick out flat.
  • Two subdials placed at 12 and 6, never at 3 and 9.
  • A chronograph that actually counts elapsed minutes instead of a pusher that does nothing.
  • Crystal that stays clear instead of hazing up under indoor light.
  • A caseback that sits flush, with no gap you can catch a fingernail on.

Use case note: for a watch worn several days a week, spend your budget on the dial and case first. For occasional wear, movement tier matters less than how the watch photographs and sits on the wrist.

Criterion 1: case size and proportions

IWC publishes the Portugieser Chronograph at 41mm in diameter with a case height around 13mm and water resistance of 3 bar. Those numbers are your ruler. A copy that comes in at 43mm or sits 15mm tall will feel like a different watch on a 6.5 to 7 inch wrist, and no amount of dial detail fixes that.

Pros of holding out for accurate proportions

  • Slides under a shirt cuff the way the real one does.
  • Reads correctly in photos, which is where most copies get exposed.
  • Strap changes behave normally because the lug width is standard.

Cons of chasing exact numbers

  • Fewer units available, so you wait longer or accept a second-choice colorway.
  • Thin cases with automatic chronographs cost more than chunkier ones.
  • Small measurement errors of a millimeter or two are hard to confirm without calipers.

Recommendation: if your wrist is under 7 inches, treat 41mm and a mid-13mm height as a hard requirement. Larger wrists can tolerate a slightly thicker case without the watch looking oversized.

Criterion 2: dial layout and hands

The Portugieser Chronograph uses a bicompax layout: elapsed minutes at 12, running seconds at 6, and no date window in the classic configuration. Leaf-shaped hands and applied or finely printed numerals complete the look. A copy that adds a date at 3 o'clock or shifts the counters tells anyone who knows the model that something is wrong.

Pros of a faithful layout

  • Subdial positions match the reference, so the dial reads as balanced.
  • Hand shapes and lengths look right at a glance.
  • No extra cutouts to collect dust or sit crooked.

Cons of the faithful layout

  • Duograph-style dials are harder to copy, so prices climb.
  • Running seconds at 6 often looks slightly smaller than the genuine on budget builds.
  • Small seconds at 6 adds a gear train in some movements, which can mean a stutter.

Recommendation: this is the criterion to be strict about. Case size can be off by a hair and still work. A dial with subdials in the wrong place never will.

Criterion 3: movement tier, quartz against automatic

Quartz chronograph copies

  • Pro: keeps time without winding and costs the least.
  • Pro: pushers usually work, so the chronograph hands move.
  • Con: the running seconds hand ticks once per second, which is the fastest giveaway on a mechanical-looking watch.
  • Con: subdial behavior often does not match a mechanical chronograph.

Use case: fine for a display piece, a costume need, or a gift where nobody inspects the second hand. Skip it if you plan to wear the watch around people who know watches.

Automatic chronograph copies

  • Pro: sweeping seconds hand and a natural chronograph action.
  • Pro: feels substantial on the wrist, closer to the genuine weight.
  • Con: thicker cases, and the added height is where proportions slip.
  • Con: servicing is impractical, so treat the movement as disposable.

Use case: this is the pick for anyone wearing the watch as an everyday piece. The sweep of the seconds hand at 6 o'clock is the single detail that separates a convincing copy from an obvious one.

Criterion 4: crystal, caseback, and finishing

The genuine watch uses sapphire crystal with anti-reflective treatment on both faces, which is why the dial looks almost invisible under glass at an angle. Copies vary widely here.

  • Pro of sapphire: clarity, scratch resistance, and the flat look the model is known for.
  • Pro of a sapphire caseback: you can judge the movement finishing yourself.
  • Con of sapphire: adds cost, and some sellers claim it without it being true.
  • Con of a display back on a budget movement: rough finishing is visible rather than hidden.

Recommendation: ask for a photo taken at a low angle in daylight. Haze, rainbow reflections, and a milky edge mean mineral glass, and it will look worse a month later.

Criterion 5: strap, clasp, and the small parts

Alligator-pattern leather, a signed pin buckle or deployant, and a caseback with crisp engraving carry more of the impression than most buyers expect. Stiff, plastic-feeling straps and thin, stamped buckles undo a good case and dial.

  • Pro of a decent strap: the watch sits flat and the lugs do not dig in.
  • Pro of a proper clasp: fewer scratches on the caseback from a loose buckle.
  • Con: factory straps are the first thing to wear out and often need replacing.

Use case: budget for a replacement strap. A plain leather strap in the right width costs little and lifts the whole watch more than any other single change.

Red flags and a final recommendation

  1. Photos that only show the watch face-on, never the profile or caseback.
  2. Dimensions quoted vaguely, or a claimed case size that changes between listings.
  3. Pushers that feel loose or make no audible click.
  4. Claims that the watch is genuine, or an offer to sell it as one.

Summing up: buy the 41mm automatic with the 12 and 6 dial layout, a clear sapphire crystal, and a case that measures near the published IWC figures. That combination covers the details people actually notice. A copy is a copy, and it should never be sold or passed off as a genuine IWC Portugieser.