LEGO Mursten Town Plan Sets, produced in the early 1950s, were among the first themed sets released by the LEGO Group. These sets included the simple, hollow rectangular bricks of the LEGO Mursten era and allowed builders to create basic models of buildings and town layouts. One of the notable sets was the Town Plan No. 1 (set number 700/1), introduced in 1955, which included elements to build a small town, such as houses, a service station, and road signs. These sets were precursors to the more sophisticated town and city themes that LEGO would develop in later years, paving the way for the extensive LEGO City theme.
1954 LEGO Sets
In 1954 LEGO began its export of its sets under the System i Leg to neighboring Sweden and Norway. With the release of 18 new sets in this year, LEGO also released new window and door elements. The new window sizes were 1x6x4 (panorama), 1x6x3 (3 pane), 1x6x3 (shuttered), 1x4x3 and 1x3x3. The new door size was 1x2x4. Also a number of new Gift Package sets were release, all under the 700s series of sets. Also, the first 1x1 round bricks were introduced.