Hi eex12,
Just curious, why the interest in the Gen?
Niel is right s/n ****c7 indicate the iPod Classic 6th Gen R.1
Officially I think Apple doesn't release a 7th Gen, they tag it as 6th Gen. Rev2,
unfortunately everyone is calling it 7th Gen. for 160GB.
A more important info, is, which iPod software is shown in the iTunes summary page, in your case it should be at least ver 2.0.2, which has the latest updated codecs.
If the software is ver 1.1.2, which you cant upgrade, then it is a 5th Gen iPod Classic, and some of the newer song and video format doesn't work.
Have a nice day!