As a rule, I don't include blank backs, in the Hoard, because they are usually classified as error cards, meaning that they are a manufacturing mistake.
However, in this instance, these cards with blank backs were deliberately issued by the manufacturer.
Over a year ago, Dan, a member at the TCDB, informed me of the legitimacy of this subset. It took me until now to acquire one.
There are 171 different cards in the base set and all subsets. One to one printing plates are also out there.
The base 2012 Goodwin Champions set and all subsets(most are smaller than standard issue, "mini" cards), feature male and female sports stars across all disciplines, from football to billiards.
Herschel Walker is shown here in a fighting pose. He fought in two Mixed Martial Arts events for Strikeforce, long after he retired from football, winning both matches.