System i Leg, which translates to System of Play, was the natural progress of LEGO Mursten and is the foundation of L:EGO sets today. Designed by Godtfred Kirk Christiansen who organized the existing LEGO Mursten sets and modeled new designs around a single, common theme - a townscape or street scene. After nearly a year of development the result was the LEGO Mursten System i Leg (System of Play). The System i Leg was unveiled at the Nürnburg Toy Fair in February 1955. The original Automatic Binding Bricks sets and then LEGO Mursten sets were continued to be manufactured under the System i Leg theme.
1959 LEGO Sets
In 1959 LEGO began a stronger international push beyond Denmark and its Scandinavian neighbors with LEGO being sold in Switzerland, France, Finland and the United Kingdom for the first time. In addition, LEGO France, British LEGO Ltd., LEGO Belgium and LEGO Sweden were established. As for new sets being produced, 1959 proved more of a lighter year with just a few new sets in production.