https://en.wikipedia.org/wiki/Mission:_Impossible_(1966_TV_series)
"The episode then depicted the plan being put into action with clockwork precision. This almost always involved elaborate and often multiple deceptions. William Read Woodfield and Allan Balter served as story consultants for the first two seasons. According to White, Woodfield and Balter relied heavily on the Maurer book The Big Con for their inspiration. Hence, Briggs/Phelps became the "grifter-in-charge", Rollin Hand and Cinnamon Carter were highly effective "ropers", and Barney Collier and Willy Armitage were experts at building or equipping "big stores".
Certain team members, as masters of disguise, impersonate the target or someone connected to the target using realistic latex face masks and make-up. A few early season episodes showed the painstaking creation and application of these masks, usually by Rollin Hand. This was later omitted as the audience presumably became familiar with the team's methods. In the 1980s revival, the mask-making process involved a digital camera and computer, and was mostly automatic. In most cases, the guest star would play the role of both the original and the agent-imposter (ostensibly Rollin, Paris, or Casey). Some impersonations are done with the explicit cooperation of the person being impersonated. In some cases, the same actor playing the IMF agent also portrayed the person to be impersonated; this most frequently occurred during Martin Landau's tenure on the series, notably in the pilot, or supplied the voice of the person being impersonated by dubbing. Most episodes included a dramatic "reveal" (also referred to as the "peel-off") near the end of the episode in which the team member would remove the mask." https://en.wikipedia.org/wiki/Mission:_Impossible_(1966_TV_series)#Plan
It's like a mask from Mission+Impossible made it into the video.
https://www.digitaltrends.com/news/watch-this-young-paul-mccartney-deepfake-turn-into-beck
Beck removing a PM mask at the end of this cool video is pure dope.
https://www.awn.com/news/digitally-de-aged-paul-mccartney-rocks-find-my-way-music-video
The movie Seconds has quite an interesting and disturbing premis, especially in the autumn of 1966.
"After waking, Arthur is informed by the company's Mr. Ruby that their service costs $30,000. It will fake his death in a hotel fire using an anonymous cadaver, then reshape his appearance and provide a fresh start. When Arthur is unsure, an older man, head of the company, shows Arthur a film of the prior staged assault, ostensibly to make his decision easier.
After considering the emptiness in his life, Arthur reluctantly accepts. He undergoes extensive procedures by Dr. Innes that transform not only his facial features, but his vocal cords, teeth, and even fingerprints.
After a lengthy healing period, the younger looking Arthur is conferred the identity Tony Wilson. Tony is relocated by the Company into a beachside community in California. He attempts to assimilate into his new life, in which he is able to live as an artist..." https://en.wikipedia.org/wiki/Seconds_(1966_film)#Plot
https://www.complete-review.com/reviews/usx/elyd.htm
https://catalog.afi.com/Catalog/MovieDetails/22848
https://sciencefictionruminations.com/2019/06/09/book-review-seconds-david-ely-1962
https://www.goodreads.com/en/book/show/877326
Why would anyone want to take some elements of this story and and work it into the Paul_is_dead rumor in the 1960s?
"According to Tony Barrow, who wrote about it in his book "John, Paul, George, Ringo and me," the rumours about McCartney's death started circulating in September 1966.[1] At the time, Barrow was the press officer for the Beatles and was responsible for fielding calls from fans and the media. He began receiving a number of dubious calls from people asking about whether Paul was alright, but he denied those claims due to the fact he claimed to have called Paul." https://en.wikipedia.org/wiki/Paul_is_dead#Beginnings
https://www.the-paulmccartney-project.com/film/find-my-way-featuring-beck
Such an elaborate hoax would require more than just a 1960s Paul+McCartney mask or today's CGI. Thus, plastic surgery would be much more likely. This urban legend remains full of intrigue.
http://thelennonprophecy.blogspot.com/2014/01/the-beatles-in-nycs-central-park-on.html
https://thedigitallabyrinth.blogspot.com/search?q=Paul+McCartney
https://desertshapes.blogspot.com/search?q=Beatles