Hi, I've been collecting oakleys since 2002. I bought this Juliet Ichiro from ebay around 2005. I don't know that early juliets suppose to have serial numbers. I am 100% my ichiro is original since this is my 5th juliet already. Polished frame, emerald slate with signature and green earsock, nose and temple rubbers. Since I was exposed to others collectors, serial numbers seem to be important so I looked at all my julets, and xs, most of the have and some don't. By my ichiro doesn't have a serial number which I understand that all ichiro have serials. Was there a switch in frames when I bought them?