[NEEDS ID] The Deuce HBO series season 1 episode 4

[sexplosion]

Did they use a real porno from the 70s including poster here or did they make one up? Poster on the left, porn flick scene on the right playing on 70s porno theater screen during the episode. If it's real I'd be curious to know who are the girls both on the poster and in the scene . . . thanks