Throw aside your personal favorites and think about the industry as a whole.
Who's on your list of the most talked about baseball cards of all-time?
For tens of thousands of kids who grew up in the late 1980s and early 90s, there's no doubt the 1989 Upper Deck Ken Griffey Jr. rookie card makes the list. It's hard to argue considering what happened to the hobby in large part because of that card.
You can't call yourself a collector and not put the T206 Honus Wagner on it.
But who else makes the cut and why?
CNBC sports business reporter Darren Rovell offers his picks and we get a slideshow of the list.
And while you're at it, what about the story of one of the great card show walk-ins in recent memory.?
At a show in Vancouver not long ago, a 1933-34 Ice Kings Howie Morenz walked in. It's now up for bid along with 13 others from the set.
The story of Howie Morenz is one of the saddest in hockey history and collectors revere his cards. Here's that story.