To my knowledge Apple clear anodizes all of the products they make that are alum. Now as to how thick that anodizing is is behond me (Mil-Spec type 3 Hardcoat being the most thickest, most durable of all anodizing) I highly doubt its that or (Mil-Spec type 2 anodizing) which I also doubt is that either. Now as with any anodizing the finishes can vary and I'm not so sure with the thickness if it can vary as well but I know if the anodizng is really thin it will be easily scratched. I'm a real anal perfectionist kind of guy so I hunt and look for perfect in pretty much everything I buy and if I come aross the most slightest only I will see flaw then I'm not happy with and the product or whatever it is must go back to who I bought it from but thats just me.