It's an Olivetti Valentine. An iconic piece of design with mechanicals almost identical to the Lettera 32. Its designer, Ettore Sotsass, was apparently not fond of it ("I worked as an architect for sixty years of my life and all people know is this fucking plastic machine" - or something to that effect) and its first production run was not particularly popular.
source for this?? interesting, if true
https://www.reddit.com/r/typewriters/comments/1mxxqkl/dieter_rams_typewriter_model/