Supplementary is a subtheme of Duplo that consists of 6 sets that as of now ran from 1982 to 1994. As of today,
2312 Supplementary Bricks is the most valuable set in Duplo Supplementary with an estimated new/factory sealed value of $116.14.
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.
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