I had a lot that were poor from the get-go. Good focus, but the colour was just plain wrong. Some did seem to alter with age, but some were marvelous after 30 years.
It's been suggested the processing was at fault, and it may well be, but it is very time-consuming to fiddle them back to something like normal.
This one I put on JB recently is typical. I'll search for a 'good' one.
http://img.photobucket.com/albums/v7...Ne/NoGuess.jpg
By the Johnson, means the Johnson Space Centre.
http://img.photobucket.com/albums/v7...theJohnson.jpg
Chalk and cheese, and I never knew why. Both with my massively heavy Yashica Pentamatic 35 mm