A 10 Card, 9 card Set

I'm not sure why card companies don't produce more 9 card insert sets. They fit perfectly into 9 card sheets. 18 works. So does 27 and 36. Not many insert sets are going to be bigger than that, but you get the point.

The worst is when an insert set is 10 cards. 1 full page and then 1 left over card.

In 1990 Upper Deck introduced the baseball card collecting world to it's Baseball Heroes set, which would continue over a couple different product lines from 1990 - 1997. They would resurrect the Baseball Heroes concept in 2002, but that was different.

Starting in 1990 with Reggie Jackson being cards #1 - #9, the set continues through 1997 ending at card #100.

The problem with the 9 card set is that there is also a not numbered header card, a 10th card.

But wait, the back of the Header Card even says that it's a 9 card set.

Here's the 9 cards.