For all vintage trading cards, those printed in the mid-1970s and earlier, the number one characteristic in determining value is centering ... the eight toughest-to-find centered cards across ...

Maybe you’ve forgotten about those cards stashed away in shoeboxes, or maybe you’ve tried to find out if you are ... out of estimating the value of your sports cards. Collx uses image ...

The value of sports cards can fluctuate for various reasons ... point during the offseason (in other words, you can usually find better prices in the offseason than during the season).