The Ericofon was conceived as a lightweight and compact version of the standard two-piece telephone. Its structural form was startlingly original, its shape incorporating the ear piece, speaker, and dial into a single unit.
The phone was designed by Hugo Blomberg, Ralph Lysell, and Gosta Thames in 1949 and was manufactured by L.M. Ericsson in Sweden.
Its commercial success was established in 1954 when it first became available in bright colors.In total the phone was available over the years in 99 different colors.
Ericson was the first company to manufacture telephones in Sweden and it remains the largest. For more, information check out this great site I found.
Inspiration for this post came from The Little Book of Design Classics by McDermott.