In fact, Russell is only selling two NBA championship rings — his first and his last — along with his Hall of Fame ring, one commemorating his two NCAA titles, another for making the NBA’s 50th anniversary team and one the league gave him for winning the most titles in professional team sports history. Also on the block are his Olympic gold medal, his final Celtics jersey, his honorary law degree from Harvard — along with the cap and gown he wore for the ceremony — and a scrapbook page with a signed letter from Jackie Robinson thanking Russell and four Black teammates for refusing to play in a 1961 exhibition in segregated Kentucky.