He looked down at the baseball card for a moment.

Or all three, in the case of this 1991 baseball card.

"We knew there was something more to the game than you could see on the back of a baseball card," he says.

Soon, he was leaving important things at their house, like his baseball cards.

Every night she didn't try to leave, he'd give her two of his baseball cards.

He was paid $450 for his face to appear on a baseball card.

Then there was the man who wanted a room just to house his baseball cards.

"And I'm probably the only guy on either team who doesn't even have a baseball card," he said.

Of course, what happened to the stock market in October could happen to baseball cards at any time.

Baseball cards account for about a third of those sales.