Fernando Gutiérrez brought Spanish designer Cruz Noveillo to my attention.
The series of posters featured below were all produced in 1975, although they would fit comfortably into a decade earlier. They seem quintessentially sixties to me.
They were not designed as the ‘official’ movie posters for public consumption, generally produced by the large film distributors, but were created for the film festivals of San Sebastian, Cannes, and Berlin. Novillo was not restricted by the normal crass commercial requirements but was very much left to reflect a more personal graphic and intelligent feel, resulting in a surprising freshness in the genre.