A replica IW371424 is a copy of the IWC Portugieser Chronograph, a steel watch of about 40.9 mm with two subdials: a 30-minute chronograph counter at 12 and running seconds at 6. Good copies match the case size, the dial layout, and the spacing of those subdials. Weak ones miss the spacing, and that gap is the easiest tell to spot from a meter away.

What does the IW371424 look like?

The reference sits inside the Portugieser Chronograph line, so it shares the family look: a thin bezel, leaf-shaped hands, applied numerals, and a fine railroad minute track. The case carries four straight lugs and a curved sapphire crystal in most versions. The dial is a two-register chronograph, not a three-register, which keeps the face open and readable.

Differences between reference numbers come down to dial color, strap, and case metal. Compare a replica against photos of the exact reference you want, not against a generic Portugieser photo.

What should you check on a replica IW371424?

Case size and lug shape

Diameter should land at 40.9 mm, with a thickness near 12 mm. Copies that run 42 mm or more sit wrong on the wrist and leave visible strap gaps. Look at the lug tops: the original has a soft chamfer that catches light in a thin line, while stamped, sharp lugs mean a low-tier case.

Subdial spacing and dial printing

On the original, the two subdials sit on a vertical line with even space above and below the center. Text is crisp at 2x magnification, with no bleed on the brand name or the town name under it. A copy with thick, blobby numerals looks off the moment you set it next to a photo of the real watch.

Movement

The original runs the 79350, a Valjoux 7750 base with the running seconds moved to 6 o'clock. Automatic replicas built on a 7750 base come closest in feel, hand-winding behavior, and pusher action. Quartz copies keep time but tick the seconds, and anyone who knows watches will catch it.

Hands, crystal, and case edges

Leaf hands should be flat, polished, and thin at the tip. Curved sapphire gives a slight distortion at the rim, while flat mineral glass looks dead. Run a fingernail along the case edge: a sharp lip means the case was machined in a hurry.

Caseback and strap

Most copies use a solid screw-down back with engraving. Deep, even lettering matters more than the inside of the case. Strap quality is where budget builds cut corners, so plan for a replacement leather strap on day one.

Replica, first copy, or super clone: what is the difference?

These terms describe build tiers, not legal status. A first copy is a general look-alike, a replica is a closer copy with a working chronograph, and a super clone is the top tier with a decorated movement and a case built to original dimensions. Price tracks the tier, and so does the risk of a dud.

How much does a replica IW371424 cost?

Prices fall into three bands, and the movement drives most of the gap.

• Budget quartz: about $60 to $120. Right size on paper, wrong feel in hand.
• Automatic 7750 base: about $200 to $400. Working chronograph, sweeping seconds, better case finishing.
• High-end build: about $450 to $800. Cleaner dial print, sapphire, correct lug chamfers, tighter strap fit.

Any quote far under those numbers is usually a photo of a watch, not a watch.

What are the common tells on a weak copy?

• Subdials that sit too close to the center or drift off the vertical line.
• Chronograph seconds hand that resets to 1 or 2 instead of 12.
• Printed text that reads thick or uneven under a phone camera.
• Case thickness over 14 mm, which pushes the watch off the wrist.
• Lume that fades in 20 minutes and glows one flat color on hands and markers.

Can a replica IW371424 be serviced?

Yes, if it carries a 7750-based movement. Most watchmakers who handle Swiss chronographs will strip, clean, and oil one, and parts for that family are easy to source. Quartz copies are cheaper to swap than to repair. Ask the seller which movement is inside before you pay, and get the answer in writing.

Care tips that keep it looking right

• Keep it away from water. A screw-down back does not mean a rated case.
• Wind it at the same time each day to keep the rate steady.
• Wipe the case with a soft cloth after wear; sweat dulls polished steel over months.
• Store it flat, away from windows. Heat ages gaskets and dial lacquer.

Frequently asked questions

Is the replica IW371424 the same size as the original?

A good copy sits within a millimeter of the 40.9 mm original. Ask for a measured diameter taken with calipers, not the number in the listing.

Does the chronograph actually work?

On automatic and quartz copies, yes. Test the pushers before you wear it: start, stop, reset. The reset should return to zero in one clean snap.

How accurate is the timekeeping?

A 7750-based copy holds within about 15 to 30 seconds a day out of the box. A watchmaker can regulate it tighter for a small fee.

Should I buy it as an investment?

No. A replica is not a store of value, and dealers and collectors spot it from the caseback engraving and the dial print under a loupe. Buy it because you like the look on your wrist.