Leave It to Beaver - Season 6 - Eps 15: The Mustache
Wally's on-again off-again girlfriend, Julie Foster seems to have thrown him over for a new guy in school who just happens to have a mustache. Wally's ego is bruised when Eddie tells him that Julie thinks he's naive and immature. This is the last straw and Wally decides to grow a mustache, much to the dismay of his family.
About Leave It to Beaver

Title: Leave It to Beaver
First Air Date: 1957-10-04
Last Air Date: 1963-06-20
Status: Ended
Rating: 6.9/10 (from 73 votes)
Language: EN
Seasons: 7
Total Episodes: 234
Network: ABC CBS
Genres: Comedy, Family
Production Companies: Kayro Productions, MCA Television, Revue Studios, Gomalco Productions, Kayro-Vue Productions
Synopsis
Leave It to Beaver is an American television situation comedy about an inquisitive and often naïve boy named Theodore "The Beaver" Cleaver and his adventures at home, in school, and around his suburban neighborhood. The show also starred Barbara Billingsley and Hugh Beaumont as Beaver's parents, June and Ward Cleaver, and Tony Dow as Beaver's brother Wally. The show has attained an iconic status in the US, with the Cleavers exemplifying the idealized suburban family of the mid-20th century.
Cast

Jerry Mathers
Theodore 'Beaver' Cleaver

Barbara Billingsley
June Cleaver

Hugh Beaumont
Ward Cleaver

Tony Dow
Wally Cleaver