What is a replica IW371628?
A replica IW371628 is a third-party copy of the IWC Portugieser Chronograph, a 41 mm steel watch with two subdials and an in-house column-wheel chronograph movement. Good copies sell for about $280 to $650 and get the dial layout, case profile, and strap right. The weak spots are the movement, the crystal, and the print on the subdials.
The reference sits in the Portugieser Chronograph 3716 family, so a replica maker only needs one case and one dial blank to cover several reference numbers. That is why photos of a "371628" copy sometimes show a dial that belongs to a different 3716 variant. Check the layout first, the reference number second.
What does the genuine IW371628 look like?
The 3716 case measures about 41 mm across and 13 mm thick, with a narrow bezel, long lugs that curve down, and a sapphire case back on most steel versions. Those proportions are what a replica has to match.
- Movement: IWC calibre 69355, automatic, column wheel, about 46 hours of power reserve
- Dial: two counters (30-minute totalizer at 12, running seconds at 6), no date window
- Hands and markers: leaf-shaped hands, applied Arabic numerals, a fine printed minute track
- Water resistance: 3 bar, which covers splashes and rain, not swimming
- Strap: alligator leather on a steel pin buckle or folding clasp
If a listing shows a date window, three subdials, or a 38 mm case, the watch is not modeled on this reference. Walk away or ask for the correct photos.
Which parts of a replica IW371628 give it away?
Dial printing and subdial finish
On the real watch the text under the logo is thin and crisp. On a replica the same text often looks fat, uneven, or gray. Look at the subdial rings too: cheap copies print them flat, while better ones use a stepped ring with a snailed finish.
Case profile and lugs
The Portugieser case is thin at the bezel and thicker at the lugs, with a curve that follows the wrist. Replicas often add half a millimeter of thickness and blunt the lug tips. Ask for a side profile photo with the watch flat on a table, not held in a hand.
Crystal and reflections
Real sapphire throws back a clean, colorless reflection. Mineral glass and "sapphire-coated" glass show a blue or purple tint at an angle. A drop of water beads tighter on sapphire than on mineral glass, so the drop test tells you something, though not everything.
The movement behind the glass
An open case back is the hardest thing for a replica to fake. The real 69355 has striped finishing, blued screws, and a column wheel you can watch move when you start the chrono. Copies use a decorated rotor over a Seagull ST19, or a plain automatic hidden under a fake plate.
Strap and buckle
Genuine IWC straps are thick at the lugs and taper toward a signed buckle. Replica straps often feel stiff, and the buckle engraving looks stamped rather than cut. Check the stitching: it should sit the same distance from the edge all the way around.
How do replica grades compare?
- Budget (under $150): quartz movement, printed subdials that do nothing, mineral glass, sharp case edges
- Mid ($150 to $350): working quartz chrono or a basic automatic, sapphire on some models, cleaner dial print
- Top or 1:1 ($350 to $700): Seagull ST19 or a clone automatic, correct subdial spacing, sapphire with anti-reflective coating, brushed and polished case finishing close to the original
Above that range you are paying for a box, papers, and seller markup, not a better watch. Ask what movement is inside before you compare prices.
What does a replica IW371628 cost?
Most sellers price by movement and dial quality, not by the reference number on the listing. A working chronograph with a correct two-counter dial costs more than a quartz watch with a decorative seconds hand. Shipping, customs risk, and any warranty add to the final number.
Expect roughly $120 for a low grade, $250 to $350 for a mid grade with a working chrono, and $450 to $650 for the top tier. Anything above $800 for a steel chronograph copy is a markup, not a jump in quality.
What should you ask a seller before paying?
- Photos of the actual watch, not stock images, including the case back and clasp
- A short video with the chronograph started, stopped, and reset
- The movement name (ST19, quartz, clone 7750) and confirmation that both subdials work
- The water resistance claim and whether the watch was tested
- The return policy and who pays shipping if it arrives damaged
Frequently asked questions
Is a replica IW371628 water resistant?
Treat it as splash-proof at best. Gaskets are the first part to fail on a copy, and 3 bar on the original is already a low rating. Keep it out of the pool and the shower, and have a watchmaker pressure-test it if you plan to wear it in rain.
Does the chronograph actually work?
On mid and top grades, yes: the pushers start, stop, and reset the central seconds hand, and the counter at 12 tracks elapsed minutes. On budget copies the pushers are often decoration and the subdials are printed on.
Can a jeweler tell it is a replica?
Yes, if they know the reference. The giveaways are the movement through the case back, the weight, and the feel of the pushers. Nobody across a dinner table will notice; a watchmaker with a loupe will.
How long does a replica chronograph last?
A Seagull ST19 or a clone 7750 can run for years with a service every four to six years, though spare parts are hard to find. Quartz copies last until the battery or the plating goes. Keep the watch away from magnets and stop the chrono before you reset it.
How do you keep a replica chronograph running well?
Wind a manual movement at the same time each day, or wear an automatic for eight hours to keep it topped up. Have the gaskets checked once a year and keep the watch out of hot water. Store it flat with the chrono stopped, so the reset hammer stays parked and the balance is not fighting the running gear train.
A replica gets you the look of the Portugieser dial on your wrist. It does not get you the warranty, the service network, or the resale value, so buy it as a watch to wear, not as an investment.