I have, actually, had 2 of these sets fall into my lap (series 12) and have made the almost perfect set for myself. Just take a look at the puzzle, it's almost a perfect match. Like I said in the auction, you would have thought another person printed these. That is how perfect this set is. There are 2 cards that do have a little bit of glue through them on their back, (full disclosure) but I highly doubt another collector has this nice of a series 12 in their collection. I was totally blown away that a set that is almost 40 years old would be kept so pristine.
I do have a high level for the cards I have in my keeper sets. Many know me as the guy that wants the best. I think my keeper collection is one of the best and when I ever decide to sell it you would be crazy not to bid on it because you shouldn't expect any less. Not saying I am perfect but since I have been trying to build my collection since 2004 I have been striving to have the best collection in the biz.
This is but an example of what you should expect from my keeper collection.