LMC 2007-D Planchet Questions

A few years ago, I toured the Denver mint (which I highly recommend). On that tour, they gave away a few of these neat little packages that each contained a Lincoln Cent and a planchet.



I haven't taken them out of the package, because I like having the two coins officially associated with each other, but I also know that this package is not meant for long-term storage.

So my questions are:
Are planchets ever graded by any of the TPGs, and would they attribute the planchet to a specific year and mint if it was in a package like this? Would it even be worth doing?

Thanks!