I bought this bass from a shop and the guy said that there isn't any cert for MIJ basses or probably for this bass. I was skeptical about it but I just loved the bass too much. It's a MIJ Fender Jazz bass. A JB62-WAL. I don't know much as to how I can verify it's authenticity but this bass feels good. Just wonder if anyone can help with verifying it so that I can sleep well knowing I made the right choice.