Part of that scarcity is a product of his short time in the majors , and part of it is strictly about the survival rate .
Roy Campanella professional model bats are amongst the scarcest of the 1948 - 1957 era .
Part of that scarcity is a product of Roy Campanella 's short time in the majors , and part of it is strictly about the survival rate .
Roy Campanella professional model bats are amongst the scarcest of the 1948 - 1957 era .