LEGO Mursten is based on the original Automatic Binding Bricks from 1949. In 1952 the LEGO Group decided that they needed a more descriptive name for their brick sets and added the phrase LEGO Mursten, which translates to 'LEGO bricks' to the existing and new boxes, and in 1953 the sets were renamed simply LEGO Mursten.
1956 LEGO Sets
1956 was another important milestone year for the LEGO Group. In this year LEGO began its expansion into various neighboring European markets including Germany and LEGO opened its first foreign sales company in Hohenwestedt, Germany. As LEGO began to expand sales they also simplified the Mursten theme. Since 1954 LEGO had sold both the old panel-like windows and doors and the new window system that relied on the studs for attachment. In 1956 the old windows were dropped. The slotted bricks were now obsolete and were replaced with a new solid wall design, the first change to the brick since 1949. This new, simplified system would be the only toy offered in new foreign markets.