Consider the question. The Philadelphia Eagles are a professional American football franchise based in Philadelphia, Pennsylvania. The Eagles compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) East division. They are Super Bowl champions, having won Super Bowl LII, their fourth NFL title, after winning in 1948, 1949, and 1960.

Answer this question based on the passage: when was the last time the eagles won the superbowl other than 2018?
What is the step-by-step reasoning process to arrive at the answer: 1960?
To answer the above question, the relevant sentence is: They are Super Bowl champions, having won Super Bowl LII, their fourth NFL title, after winning in 1948, 1949, and 1960.