Domain: commerce (Product Selection and Specification)
Problem: I am considering purchasing the pre-owned watch shown in the picture. Please tell me if this watch is authentic and provide at least one piece of evidence that directly supports your conclusion.
Answer: Counterfeit. Basis (either answer is acceptable):

1. The back of the watch is engraved with the word "VERMEIL". The authentic product should be made of "gold-plated silver" material (with a golden appearance), but the watch shown in the picture is silver, and there is a contradiction between the material and the label;
2. The screws at the four corners of the back of the watch have flat printing/laser etching patterns, rather than real physical screws.