The Season 3 episode Air Lock that was recovered last year is to be shown in full on the big screen in London next month.
It will form part of the first session of this year's annual BFI event Missing Believed Wiped, entitled The Weird And The Wonderful.
An excerpt from the Galaxy 4 episode was shown as a surprise part of last year's BFI showcase of recovered TV material, as was the screening in full of episode 2 of The Underwater Menace, whose recovery had similarly been kept under wraps until then. Both episodes were shown in full in Cardiff in May.
In addition, the second and concluding session of this year's Missing Believed Wiped - Music And Entertainment - will include the recovered March 1966 edition of BBC TV's youth culture show A Whole Scene Going that features a location report from the filming of Daleks - Invasion Earth: 2150 A.D.
Tickets to both sessions of this year's event, which takes place on Sunday 2nd December at the BFI Southbank, go on sale to the public at 11.30am on Tuesday 13th November.
As previously reported, Air Lock is to be a bonus episode on next March's special edition DVD release of The Aztecs.