Strange 2011 Pennies (Polished Die?)

Today I went to the store (a newly opened one) and found out that the "penny guy" (self-introduced) had given the owner a bag of six 2011 cents with instructions to "give them to that kid". Apparently, being a young collector pays off. Each one of them appears to be a polished die error, but errors aren't really my strong point so I'm bringing them here. They all have varying degrees of wear (bad word choice) to them, but you can see parallel lines over the smooth areas on each one. Both sides are polished, although it's more noticeable on the Queen's curly hair details.





(poor attempt at a tilted photo to bring out the polish lines)


Are any of these worth certification? I heard a comment that these were selling for $10 at one point, but I haven't found much information otherwise.