(Ann-Mari Forsberg, born Lindbom, for Märta Måås-Fjetterström AB). Designed in 1945. A label at the back.
For litterature look at the Swedish note.
Examples of "Blå crocus" exist in the collections of Victoria and Albert Museum in London, Natinalmuseum in Stockholm, Nordenfjeldske kunstindustrimuseum in Trondheim, Kunstindustrimuseet in Oslo.