How can I identify if I have CC or fakes?

Thanks for the tips guys. I don't have the original box as my guy reboxed them to get em back home safe so checkin the box is out. I may not be able to be 100% on ID I guess. I haven't smoke many CCs so my judgement on their authenticity may not be great, but they are very good smokes (to me anyway) and I am not one to look a gift horse in the mouth, real or fake.