Where do I start? My first show was in 1976, so there's a ton I want back. Some 'highlights':
Two 1954 Aaron RCs, one a PSA 7 with good provenance.
1949 Bowman Jackie Robinson and Duke Snider
1952 and 1953 Topps Willie Mays
PC796 Eddie Plank
Of course what I want back pales against what I wish I'd bought when I could afford them: Ruth RC, Gehrig RC, all the Goudey Ruth and Gehrig cards, 1949 Play Ball Williams, Zeenuts Joe DiMaggio, Wilt Chamberlain RC, a stack of 1986 Fleer Jordans and Star Jordans and 1993 SP Jeters, 1952 Topps Mantle, 1951 Bowman Mantle, 1949 Leaf Jackie Robinson, 1949 Bowman Paige, T206 Cobb green portrait, and so many others...It is fair to say that if I'd bought those cards when I had major disposable income in my twenties in the nicest condition I could afford at the time I would be able to sell them and retire today. But I had a heckuva time with my collection anyway. Like Satch used to say, don't look back, something might be gaining...