This clip from episode one of the Doctor Who story 'The Enemy of the World' shows the Doctor, played by Patrick Troughton, going for a dip in the sea.
The 1967 episode is one of nine tracked down in a store room at a Nigerian TV station, where they were gathering dust.
Footage courtesy of BBC Worldwide.
The newly found programmes - which introduce the character of Alistair Lethbridge-Stewart, better known to audiences as The Brigadier - will be available on iTunes from today and will later come out on DVD.
Phillip Morris, the director of Television International Enterprises Archive, unearthed the programmes by looking up the records of overseas shipments of tapes made by the BBC.
The stories, The Enemy Of The World (1967) and The Web Of Fear (1968) and both starring Patrick Troughton as the second Doctor, have now been remastered by BBC Worldwide, the corporation's commercial arm.
Nine long-lost episodes of Doctor Who which have not been seen since the 1960s have been recovered after they were tracked down to a store room in Nigeria, gathering dust.
The discovery will cause much excitement for devotees of the long-running series, for which there are dozens of missing episodes dating back to its early years
The previously lost nine shows were among 11 traced to a television relay station and the find brings back to life an entire six-episode story, while another is almost complete.
An article penned by Peter Capaldi in 1976 and published in a Dr Who fanzine has appeared online. It comes after Capaldi was named as the star to replace Matt Smith as the Time Lord.
The article describes the opening sequence of Doctor Who and praises the 'artistic integrity and sensitivity' of Bernard Lodge, the man behind five opening titles sequences.
Clearly in awe of Lodge's work, and an avid fan, Capaldi writes: "The wonder of the opening is that it manages to capture in only a very few moments of screen time the atmosphere of Dr. Who."
He adds: "When that blue police box zooms in from a morass of complex light forms, there is no question of its right to be there. So already, within seconds of starting, the title designer has drawn us into the world of Dr. Who."
Glasgow-born actor and Oscar winner Peter Capaldi has been unveiled as the 12th incarnation of Doctor Who.Read the full story ›
The outgoing Doctor Who, Matt Smith, welcomed the decision to cast Peter Capaldi.
In a pre-recorded message he said: "I just want to wish my successor all the best and just say good luck and good on you for getting it, because I know he is both a huge fan of the show and a really nice guy.
"The casting of it made me really excited genuinely, and as a fan I think it's a really canny choice, so good luck mate, it's going to be a thrill."
Peter Capaldi, who was the bookies' favourite, is the first Oscar winner to take on the role of Doctor Who.
He said: "Being asked to play The Doctor is an amazing privilege. Like the Doctor himself I find myself in a state of utter terror and delight. I can't wait to get started."
Glasgow-born actor and Oscar winner Peter Capaldi has been unveiled as the 12th incarnation of Doctor Who.
Celebrity photographer Rankin has revealed that the next Dr Who is definitely a man, the Mirror reports.
There had been some speculation that the new doctor would be a women. Writing on Twitter Rankin said:
Just photographed the next Dr Who for tonight's announcement. Let me know what you think of the photo? He's going to be an ace Dr.
The identity of the Doctor to replace Matt Smith will be announced on television tonight with Peter Capaldi still the bookmakers' favouriteRead the full story ›