An episode of Hancock's Half Hour which went missing from the BBC archives is being aired on digital station BBC7.
Tony Hancock was a regular on BBC radio and television
The Blackboard Jungle was rediscovered after a home recording made in the 1950s by Hancock fan Vic Rogers was brought to the BBC's attention.
The show, written by Galton and Simpson, was first broadcast on the BBC's Light Programme in 1955.
BBC7 radio station is playing Hancock's Half Hour on Tuesday at 0800BST, 1200BST and again at 1900BST.
The rediscovered programme will be introduced by Malcolm Chapman, who is archivist for the Tony Hancock Appreciation Society.
Mr Chapman helped bring the recording to the BBC's attention.
Hancock made a series of classic comedy programmes for both BBC radio and television, including the famous Blood Donor episode.
Six series of his radio show were made, along with an additional series of half-hour specials.