These are great! GPK first came out when I was in 2nd grade so I have many, many memories of trading them in grade school and of course now have all the cards, etc. I remember when Topps Vault ebayed all the original art from the early series about 20 years ago. They sold for $600-800 apiece. I thought that was too expensive at the time, but now I look back and wow... should have bought some of those!
These cards all needs twins though, right?