LEGO Mursten, produced between 1949 and 1953, were the first plastic building blocks by the LEGO Group. These early sets, known as LEGO Basic Sets, included simple, hollow rectangular bricks without the modern stud-and-tube locking mechanism. Sold primarily in Denmark and a few European countries, these sets laid the groundwork for the modern LEGO system. In 1953, the Mursten evolved into "Automatic Binding Bricks," featuring an improved design that eventually led to the patented stud-and-tube system in 1958, which greatly enhanced the stability and versatility of LEGO constructions.
1954 LEGO Sets
In 1954, LEGO expanded its System i Leg sets beyond Denmark, officially exporting to Sweden and Norway. This year saw the release of 18 new sets, including a variety of new window and door elements. The new window sizes included 1x6x4 (panorama), 1x6x3 (three-pane), 1x6x3 (shuttered), 1x4x3, and 1x3x3, while the first 1x2x4 door was introduced. Additionally, LEGO released several new 700-series gift package sets and debuted the first 1x1 round bricks, expanding building possibilities.