About a month ago I purchased 4 boxes of pennies to roll search (looking for copper and wheats) and when I got home and cut open the seal on the first box and saw nothing but bright coins. Disgusted, I cut open the second box and again I saw nothing but bright coins. Both boxes contained nothing but 2012's.
I turned both boxes back in for other boxes. I've never seen another box like those again.
From time to time both before and after I've come across new 2012's but have never seen another box. Such is life.
I did keep a few rolls for myself though.