The league's all-time leading scorer is auctioning rings he won with the Los Angeles Lakers in 1980, 1985, 1987 and 1988, plus other game-used and autographed memorabilia from his legendary career. Abdul-Jabbar, 71, wrote on his website earlier this month that "much of the proceeds" will benefit his Skyhook Foundation, a charity that helps kids learn about science, technology, engineering and math. "When it comes to choosing between storing a championship ring or trophy in a room, or providing kids with an opportunity to change their lives, the choice is pretty simple.