This meant he didn't see a ton of playing time, but also meant he was on some pretty amazing teams. With the Dodgers in 1955, the year this card came out, Walker's Dodgers won it all. "Rube" Walker didn't see any action in the World Series, but won a ring just the same.
After retiring as a player, Walker spent the next couple decades as a coach in the Majors. Most of his time was spent with the New York Mets where he spent 15 years as their pitching coach. He coached the staff featuring Nolan Ryan and Tom Seaver on the Miracle 1969 Mets where he won his second World Series ring.
At one time I set the goal to collect a 1955 Topps card of ALL of the '55 Dodgers. This is my first and I don't think I am gonna get any further... I love this game, I love this hobby! 55 years LATER!