[JustBradd]

Top of my list is certainly the 1952 Berk Ross Willie Mays, after that, it's a bit of a toss up:

1. 1952 Berk Ross Willie Mays
2. - 5.+ 1964 & 1968 Bazooka Willie Mays; any solo Venezuela Topps Mays; 1956 Topps Pins; Hires Root Beer, etc etc