The short answer
A replica IW323746 is a copy of an IWC watch, built to look like the original and sold without IWC provenance. Judge it as a cosmetic object, not as an investment. Four checks decide most of the quality: case dimensions against the official reference spec, dial printing under magnification, caseback engraving depth, and the movement inside. A copy that passes all four is a better copy. It is still not an IWC, and it carries no manufacturer warranty or service support.
Prerequisites
- A digital caliper accurate to 0.1 mm.
- A 10x loupe or a phone macro lens.
- The official IWC spec sheet for reference IW323746, or a dealer listing that repeats the same numbers.
- Timestamped photos from the seller, including a clear shot of the movement.
How to vet the watch, step by step
Pull the official numbers first. Write down the case diameter, case thickness, lug width, and calibre for reference IW323746 from the IWC spec page or an authorized dealer listing. Every later check depends on those four figures.
Measure the case yourself. Place the caliper across the case at 3 and 9 o'clock, then across the lugs at 12 and 6. Compare each reading to the official figure. A gap of more than 0.5 mm on diameter or thickness points to a generic case, not a reference-matched one.
Read the dial with a loupe. Check the logo stroke weight, the alignment of the index at 12, the depth of the printed minute track, and the spacing between the text lines. Replica dials show heavy ink, uneven letter spacing, or a logo that sits off center.
Inspect the hands and the date window. Hands should reach the minute track with a small gap, the sweep should be smooth across the dial, and the date should sit centered in the cutout. Short hands, chipped lume, or a date that crowds one edge are common faults.
Turn the watch over and study the caseback. Engraving should have crisp edges and consistent font depth across the whole line. Laser-etched copies look shallow and grey under a loupe, and the lettering loses weight at the curves.
Ask for movement photos. The rotor engraving, the finishing on the bridges, and the shape of the balance wheel tell you which base calibre sits inside. Ask the seller to name the calibre and the beat rate, then compare that answer to the movement photo. Mismatched answers are a hard stop.
Check the bracelet and clasp. End links should sit flush against the case with no visible gap, the clasp should close with one firm press, and the screw heads should be uniform. Loose end links and soft clasp springs signal a low-grade copy.
Test the functions in person or on video. Wind the crown 20 turns, cycle the date through a full month, and check each crown position. A gritty wind or a date that hesitates points to a movement that will need service soon.
Weigh the watch. Ask for the weight in grams and compare it to a published figure for the reference. A difference of 20 grams or more usually means a different case material or a hollow bracelet.
Confirm terms before payment. Get the return window in writing, pay with a method that allows a chargeback, and confirm the shipping route. US Customs seizes counterfeit watches, so any seller who promises guaranteed clearance through customs is promising something they cannot control.
Red flags to walk away from
- No movement photos, or photos without a timestamp.
- Case size off by more than 1 mm from the official spec.
- Dial text with uneven spacing or a logo that sits off center.
- Swiss made printed on a watch that runs a Chinese movement.
- Price far below the going rate for the replica tier, or far above it.
- No written return policy and no chargeback option.
Legal and practical note
In the United States, trafficking in counterfeit goods is illegal under 18 U.S.C. 2320, and shipments can be seized at the border. A buyer who pays for a replica has no recourse through IWC and no access to manufacturer service. Treat the purchase as a disposable cost, not as a watch you can resell or repair through official channels.