In previous articles we looked at the Impossible Baseball ... card collections. Still, while those Gregg Jefferies rookie cards you stashed away in Lucite holders are today most valuable as ...

These are the most valuable rookie baseball cards of all time ... to three consecutive World Series titles in the early 1970s, then led the New York Yankees to two more World Series titles ...

Once you realize just how much money the most valuable Topps baseball cards have sold for, you'll be singing along to this updated tune. Topps, a Brooklyn based company, got its start in 1938 ...