Don't have any pics at the moment (will work on getting them up), but I'd conservatively grade them as follows:

1977 EX
1978 EXMT/NM
1979 EXMT/NM

Each set has a couple of stragglers that need to be upgraded, but not many (maybe 10 per set). All the stars are in good shape.

Take them all for $300 (I'll cover shipping)

Feel free to contact me with any questions.