Question: how to tell the difference between real ray bans and fake ones?
Answer: All original Ray-Bans have a "RB" etched onto one lens (check the far left side of the left lens) and "Ray-Ban" written in white in the top corner of the other. On fakes this etching will either be missing or of poor quality. The "RB" etching should be crisp and etched, not painted on.