1861 LEGO Duplo Box of Bricks

Building Sets is a subtheme of Duplo that consists of 182 sets that as of now ran from 1972 to 2018. As of today, 3191 Anniversary Bucket is the most valuable set in Duplo Building Sets with an estimated new/factory sealed value of $329.44.

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.