record-breaking sales numbers certainly don’t make it easy to guess at how widespread the issue is, but an informal poll in the MacRumors forumsindicates that out of some 1260 respondents, more than a third are reporting some kind of damage. The source of the scuffs (pictured below) is anyone’s guess, but as All Things D points out, the iPhone 5’s case is made out of anodized (i.e., coated) aluminum, which, while being lighter than the stainless steel used in the iPhone 4 and 4S, is also softer and appears to be more susceptible to scratching. It's worth noting that HTC used a comparable oxidized finish for its One S handset — a phone whose users reported having similar cosmetic issues.
I hope anyone here hasn't experienced this! And fingers crossed on Friday I don't have this problem. I'll by purchasing mine from Telecom and I know they won't be easy to deal with unlike going to an Apple store.
The scuffs may be minor, but for a brand new product, you'd want it to be scuff free until the usual wear and tear happens.