Not sure why a good number of flashaholics pay much attention so serial numbers. Your flashlight is a C2L and not exactly a C2. Virtually the same thing but if serial numbers are a concern to you then perhaps the difference between a C2 and a C2L are too.
With that being said your flashlight has got the newer Surefire logo on it. So that means it's one of the more recent batch that Surefire made for the C2L so it's a much more recent flashlight then say the older C2L with the older Surefire logo. I just pulled my C2L from my holster just to see what the serial number was. It's A00878. It's got the older Surefire logo which some collectors desire more. The P60L that came with it was long sold and now it carries trip nichia drop in.
You have a nice flashlight there and the C2L with the KX4 bezel is rarely seen around here I think. I sort of regret selling mine awhile back.