I got this card signed in the early '90s while Brett was playing for the Dodgers. Brett had a long career. He always had a good average and high OBP. He was a good lead-off man who stole over thirty bases a year for most of his career, although he never had a great stolen base percentage (.685 for his career).
This card wasn't a good choice to get signed as it is another dark card. It is slightly unique, though, as it lists his position as CF rather than OF. You don't see that too often (at least not that I recall).