Here's a couple more of my favourite posters from 50s/60s, in my collection.
Wild Strawberries, Ingmar Bergman, designer: Jerzy Flisak (1960)
Friends for Life, Italian / French film by Franco Rossi, designer: Jozef Mroszczak (1959)
The Magic of the Kite, France, China, dir: Roger Pigaut, deigner Wojciech Wenzel (1960)
The Story of Tosca, Polish Movie Poster Italy, Carl Koch designer: Jerzy Srokowski (1953)
True Friends, Polish Movie Poster, film, Russia dir: Mikheil Kalatozishvili designer: Eryk Lipinski (1954)
Do Not Mention the Cause of Death,"Uzrok smrti ne pominjati". (Yugoslavia) director: Jovan Zivanovic. designer: Marian Stachurski, 1969
Some more tomorrow if I get time