Short answer
Imitation C131.23 is a replica watch sold under the C131.23 code. The code is not a widely documented Swiss factory reference. It works as seller shorthand for a lookalike model. Do not treat it as proof of origin, movement, or water resistance. Ask which authentic watch the replica copies. If the seller cannot name the brand, model, and case size, the listing is weak.
What the C131.23 code usually means
Replica sellers use internal codes to track case shapes, dial colors, and bracelet styles. C131.23 may map to a specific case and dial combination in one seller catalog. It may mean something else in another catalog. The code does not carry the same weight as a manufacturer reference. Genuine brands publish references that match a case, movement, and dial. Replica codes often do not. Confirm the actual copied model before you compare details.
Before you evaluate the watch
- Get the seller stated brand and model.
- Request clear photos of the caseback, clasp, dial, and movement.
- Ask for the case diameter, lug width, thickness, and weight.
- Confirm the movement type and power reserve.
- Check the return policy in writing.
How to check an imitation C131.23
- Compare the case size and thickness to the authentic model published specs. A replica that is 1 mm thicker or wider changes the wrist fit.
- Inspect the dial printing under magnification. Look at logo spacing, font weight, and index alignment.
- Check the date window and cyclops if the model has one. The magnification and date font should match the original design.
- Review the bracelet or strap. Look at end-link fit, clasp engraving, and screw heads.
- Ask for a movement photo or timing result. A stable rate and correct beat rate matter more than decorative plates.
- Test the crown, bezel, and pushers if you handle the watch. They should move without grit or wobble.
- Confirm water resistance claims in writing. Do not swim with a replica unless a watchmaker has pressure-tested it.
Red flags
Walk away from a seller who claims C131.23 is an official Swiss reference without evidence. Treat terms such as 1:1 and super clone as marketing terms. They do not define a quality standard. A seller who hides the movement, refuses close-up photos, or pushes a final sale has given you the answer. Also check local law. Counterfeit sales and imports carry civil and criminal risk in many countries.
Ownership notes
Budget for service. Replica movements often use generic parts. A local watchmaker may refuse to work on counterfeit goods. Ask before you buy. Keep the watch away from heat, magnets, and chlorine. Rinse a steel bracelet with fresh water after sweat exposure, then dry it fully. Store the watch on a soft surface. Do not expect factory-level warranty support. The code on the listing will not get you service at an authorized dealer.