531 Elephants was a 20 piece Duplo set released in 1976. It was a pre-school set.

Sets in Duplo

Theme / Subtheme Duplo / PreSchool
Year 1976
Pieces / Duplo figures 66 / 7
Availability Retired
082 Duplo PreSchool LEGOVille
Value $453.19
Theme / Subtheme Duplo / PreSchool
Year 1976
Pieces / Duplo figures 53 / 5
Availability Retired
081 LEGO Duplo PreSchool Train Station
Value $508.63
Theme / Subtheme Duplo / PreSchool
Year 1976
Pieces / Duplo figures 28 / 4
Availability Retired
080-3 LEGO Duplo PreSchool Police Station
Value $444.52
Theme / Subtheme Duplo / PreSchool
Year 1976
Pieces 20
Availability Retired
74 LEGO Duplo PreSchool Set
Value $298.33
Theme Duplo
Year 1976
Pieces 19
Availability Retired
532 LEGO Duplo Pull-Along Ducks
Value $255.44
Theme Duplo
Year 1976
Pieces 9
Availability Retired
530-2 LEGO Duplo Puppy