Although NBA Hoops utilized second photographs on the backs of their cards, they were tiny, generic portraits. SkyBox Basketball chose huge photos that took up a considerable section of the back in 1990-91, frequently action photographs or anything that highlights the player's personality. For example, Scottie Pippen is known for his entertaining antics on and off the court, so it makes sense that his card has some funny pictures on it. Another interesting aspect about these cards is that most of them are autographed. Although unsigned cards can be valuable, signed ones are worth even more because you know that the player actually looked at the card and decided to sign it. In addition to players, a few managers, coaches, and trainers have signatures on these cards as well. Because there weren't any standard sizes back then, many of these signatures are fairly small. However, because they're still signatures, they're all worth something. Finally, some of these cards feature full-color artwork. These cards are particularly popular with artists who want to show off their work. Some of these cards sell for hundreds of dollars today. Overall, SkyBox was one of the first companies to realize how popular basketball players were going to be later in the '90s. They also made memorable cards that are worth collecting today.