Identification of a Cam

So as I was reading through instruction maual on a Black Diamond C4, I saw where it showed how to identify the year of your C4 in the serial number. My new C3 said the same in the instruction book, but I can't seem to find the number on the cam. Is there any way to figure this out? Also, +1 to Mont-Bell up in Boulder for the great deal on the new gear. Got the C3 at 30% off