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 ...

These are the most valuable rookie baseball cards of all time ... of the 1939 Ted Williams Play Ball rookie card in circulation, and there are just 100 PSA 9 and PSA 8 graded copies in existence.

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 ...

Cincinnati Reds catcher Tyler Stephenson agreed to a trade with a fan who had what's considered Stephenson's most valuable baseball card, and Topps tweeted about it. Topps tweeted that the trade ...