Tonton Streaming The Rifleman (1958) S1E7 - Duel of Honor

When an Italian Count arrives in North Fork, his strange attire attracts the attention of Groder, a town bully. Groder, trying to have fun with this stranger, destroys some of the Counts currency, mocks him, and tries to humiliate him. Eventually, the Count challenges Groder to a duel and asks Lucas to be his Second.