1. Sets
  2. 1975
  3. Duplo

LEGO 1975 / Duplo Sets

In 1975, LEGO released 9 Duplo sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Building Sets and PreSchool. For that year, the total price of all retail sets cost $26, today those sets are valued around $759.
Most valuable 1975 LEGO Duplo set
78 PreSchool Set $370.94
Largest 1975 LEGO Duplo set
521-8 Bricks and Half Bricks All Colors 640 pieces
9 sets

75 PreSchool Set

Theme / Subtheme Duplo / PreSchool
Year 1975
Pieces 16
Availability Retired
75 LEGO Duplo PreSchool Set
Retail $3.99

77 PreSchool Set

Theme / Subtheme Duplo / PreSchool
Year 1975
Pieces 20
Availability Retired
77 LEGO Duplo PreSchool Set
Retail $4.25
Value $347.81
Growth  +8083.8%
Annual growth 9.0%

78 PreSchool Set

Theme / Subtheme Duplo / PreSchool
Year 1975
Pieces 32
Availability Retired
78 LEGO Duplo PreSchool Set
Retail $4.25
Value $370.94
Growth  +8628.0%
Annual growth 9.2%

516 Bricks and Half Bricks

Theme / Subtheme Duplo / Building Sets
Year 1975
Pieces 20
Availability Retired
516 LEGO Duplo Bricks and Half Bricks
Retail $1.25

517 Bricks and Half Bricks And Arches

Theme / Subtheme Duplo / Building Sets
Year 1975
Pieces 121
Availability Retired
517 LEGO Duplo Bricks and Half Bricks And Arches
Retail $1.49
Value $40.00
Growth  +2584.6%
Annual growth 4.9%

518-8 Bricks and Half Bricks And Trolley

Theme / Subtheme Duplo / Building Sets
Year 1975
Pieces 17
Availability Retired
518-8 LEGO Duplo Bricks and Half Bricks And Trolley
Retail $1.49

519-8 Bricks and Half Bricks And Arches and Trolley

Theme / Subtheme Duplo / Building Sets
Year 1975
Pieces 240
Availability Retired
519-8 LEGO Duplo Bricks and Half Bricks And Arches and Trolley
Retail $2.25

520-9 Bricks and Half Bricks And Two Tolleys

Theme / Subtheme Duplo / Building Sets
Year 1975
Pieces 168
Availability Retired
520-9 LEGO Duplo Bricks and Half Bricks And Two Tolleys
Retail $2.89

521-8 Bricks and Half Bricks All Colors

Theme / Subtheme Duplo / Building Sets
Year 1975
Pieces 640
Availability Retired
521-8 LEGO Duplo Bricks and Half Bricks All Colors
Retail $3.99

Year Pricing

Retail
$25.85   (for all 9 sets)
New/Sealed
Value
~$758.75
Used
Value
$375.85

Subtheme Pricing

1975 / Duplo
Annual growth
PreSchool
+9.05%
Building Sets
+4.94%

Subthemes

1975 / Duplo
Sets
Building Sets
6
PreSchool
3

Community Stats

The following are the top 9 most owned 1975 Duplo sets by LEGO collectors.
#1Bricks and Half Bricks And Two Tolleys
#2Bricks and Half Bricks And Arches
#3Bricks and Half Bricks All Colors
#4Bricks and Half Bricks
#5Bricks and Half Bricks And Arches and Trolley
#6Bricks and Half Bricks And Trolley
#7PreSchool Set
#8PreSchool Set
#9PreSchool Set

About LEGO Duplo

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.
1975 LEGO Sets
1975 expanded Basic Building Sets and introduced more systematic, idea-led boxes. Proto-minifigures—small, faceless figures with single-piece legs—appeared in town and train sets, foreshadowing the 1978 minifigure. LEGOLAND-branded sets emphasized construction vehicles and realistic machinery, reinforcing everyday play before the arrival of dedicated Space and Castle themes.