Upon Lechias return to the Ekstraklasa, these were seen as being the club's "golden years" of their early history. 1955 was a much better year for Lechia in the league with the team finished in 5th place, while also reaching their first Polish Cup final. Lechia's route in the Polish Cup () to the final saw them beating Sandecja Nowy Sącz, Wisła Kraków, Odra Opole and Gwardia Warszawa. The final saw Lechia play Legia Warsaw at the Polish Army Stadium. Lechia lost the game 5-0 after a hat-trick from Kempny, and a goal each from Pohl and Słaboszowski.