Lego Spielwaren GmbH, Germany. 1956
Box, unfolded. 4-color litho on coated paper. Original image courtesy Eric Strand.
This was a generic sleve used for any small set or supplementary set from 1956—1957. Shown on the front are Gunhild (left), Hanne and Kjeld (right). On the back are Godtfred (left), Kjeld, Jorgen, Gunhild and Hanne (right).
The contents of the set were printed on an inner cardboard tray.