Del had 2 stints with the Phillies - from 1973 to 1974, and again from 1979 to 1982. Primarily a pinch-hitter, Del hit a clutch, game-tying double in the ninth inning of 1980 World Series Game 5 to score Mike Schmidt. He coached with the Phils from 1985 until 1988, and he's currently a professional scout with the organization. Del wore #25 throughout his Phillies' playing and coaching career.
(On a side note, I've always loved the 1982 Donruss set.)