LEGO 1955 Sets

1955 was a very important year for LEGO. In this year, Godtfred Kirk Christiansen attended both the attended the London and Nuremberg Toy Fairs where he eventually came up with the LEGO System of Play and the now classic Principles of Play. These principles were issued to every LEGO employee in 1962 and still stand as the core principles of the company. Godtfred 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 (System of Play) was unveiled at the Nürnburg Toy Fair in February 1955 but the reaction was less than positive.

In 1955, Sales of LEGO's bricks began to improve with the introduction of System i Leg, but they were still not the core LEGO product. In addition, LEGO products went on sale in Sweden and Germany for the first time.