Short answer
If a watch listed as an IW371645 costs a few hundred dollars, arrives in a plastic bag with a printed warranty card, and the seller calls it a super clone, it is a Chinese replica. A genuine IWC chronograph in this reference family is a stainless steel automatic with a carefully finished case, sharp dial printing, and an in-house movement. Fakes fail on the details you can check without opening the watch: printing, date font, crown action, and how the chronograph pushers feel.
Why the reference number is the first test
IWC uses long numeric references, and one digit changes the whole watch. Replica sellers often quote a number that looks close but does not match any real production run, or they use a single reference for watches that came in different case sizes and dial colors. Before anything else, match the number to a real catalog entry: case diameter, movement caliber, dial variant, and whether the caseback should carry an engraving. If the seller cannot produce those specs, stop there.
Dial and hands
The dial is where most replicas give themselves away, because crisp printing is expensive to copy.
- Printing: genuine IWC text is razor sharp under a loupe. Replica IWC SCHAFFHAUSEN lettering often looks thick, or the words sit crooked on the dial.
- Applied markers: they should sit flat and catch light with an even spread. Fakes sometimes show markers polished too bright or set at a small angle.
- Date and day window: the font is the giveaway. Real numerals have a specific shape with clean edges. Replicas use generic date discs with fatter, rounder digits.
- Lume: on a real watch the lume sits level with the marker edge. On a fake it is domed, patchy, or a different shade of cream.
- Subdials: check spacing and hand position at rest. Subdial hands that do not zero out point to a cheap modular chronograph movement.
Case, crown and pushers
Case finishing is harder to fake than a dial, and easier to feel than to photograph. Run a finger along the lug edges. Genuine IWC cases have tight, consistent transitions between brushed and polished surfaces. Replicas are usually over-polished, with softened lug edges and a thicker profile than the real thing.
Then work the crown and pushers. Screwing the crown down should feel smooth with a clear stop. Pushers should have short, positive travel and reset the chronograph at once. Mushy pushers, a gritty crown, or a chronograph that hesitates before snapping back all point to a Chinese movement inside.
Caseback and movement
Flip the watch over. Engraving on a genuine caseback is deep, centered, and even. Laser-etched replicas look shallow and grey. If there is a display back, study the rotor and bridges. Real finishing means Geneva stripes, perlage on the base plate, and polished or blued screws. Fake movements often show rough machining marks, a stamped rotor, and screw slots that have been chewed up.
One caution: a decorated Chinese movement can look convincing in a photo. You need magnification and good light, and even then a watchmaker's opinion beats any online checklist.
What the replica market actually delivers
Chinese replica IWC chronographs come in tiers, and the tiers matter more than the marketing. Budget versions use quartz or basic automatic movements with a fake chronograph function. Mid-tier versions run a cloned movement with a working chronograph but rough finishing. The best of them get the outside close and still miss the inside. None are IWC, none hold value, and none come with brand service.
A quick checklist before you buy
- Confirm the reference number against IWC's own specs.
- Ask for macro photos in daylight, not showroom shots.
- Request a movement photo if the caseback is transparent.
- Compare date font and dial printing side by side with a known genuine example.
- Have a watchmaker open it before money changes hands.
Price is the loudest signal of all. If a watch is offered far below the going rate for the reference, the seller knows something you do not.