Basic Set is a subtheme of Duplo that consists of 5 sets that ran from 1969 to 1998. Most sets were released in 1970 which accounted for 2 sets. As of today, the average annual growth of all the sets in Duplo Basic Set is around 6.2% per year. As of today,
511 Building Set is the most valuable set in Duplo Basic Set with an estimated new/factory sealed value of $328.47.
The LEGO DUPLO theme was introduced as far back as 1969 and is designed for children ages 1 to 5. It features DUPLO figures which are much larger than minifigures and DUPLO blocks which are about twice the length, width, and height of a standard System brick. Like LEGO System, DUPLO also has subthemes that are often junior versions of System themes, like Pirates and Castle and licensed themes like Disney and Super Heros.