I'm like Tonyo...1973 was the first set I collected seriously as a kid...and over the years I upgraded it. I remember buying the 4th series complete from Larry Fristch since I couldn't for some reason find the 4th run in my area. The High Numbers were easier!
I went back and completed the 1972 set much later...but also enjoyed collecting that one.
1974 brings back the fondest of memories...I completed almost the entire set card by card by buying packs and then trading with my friends during that hot summer as a kid!
Eventually went for the master set and finally obtained the last card i needed 1974 Washington NL Dave Roberts at the old Bob Lee show in SF in the late 80's...the guy I bought it from was just as excited as I was when I told him that was the last one I needed.
Ricky Y