I am new to this forum and honestly had no clue you guys were out here. Got my first pair of Polarized Juliets last year from my buddy. I tried looking for a serial number, but not sure where it is. I also have a pair of polarized Romeo 2.0 and X Squares I bought these from my buddy who I trust only buys authentic, but I have no clue how to validate them. Can you guys give me some advice.