1991 Fleer Ultra Brent Mayne #150 is a base trading card featuring Brent Mayne as a member of the Kansas City Royals. Fleer Ultra baseball cards from the early 1990s are known for their premium presentation within the Junk Wax era, and this card represents Mayne early in his major league career as a Royals catcher. Player: Brent Mayne Team: Kansas City Royals Set: Fleer Ultra Card Number: 150 Year: 1991 SportsCardsPro graded sales: $1.59 on 2023-04-13, $0.19 on 2023-02-10.