In 1975, LEGO released 41 sets across 6 themes, all of these sets have been retired. January saw the release of the most sets, with a total of 2. For that year, the total price of all retail sets cost $233, today those sets are valued around $15,253.
Most valuable 1975 LEGO set
390-2 1913 Cadillac $1,535.62
Highest growth 1975 set
133 Locomotive +25272.32%
Largest 1975 LEGO set
521-8 Bricks and Half Bricks All Colors 640 pieces
Most owned 1975 set
659 Police Patrol
1975 expanded the LEGOLAND-branded range and refined vehicle and construction equipment builds. Pre-minifigure figures and brick-built characters remained the norm.
41 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 $346.51
Growth  +8053.2%
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 $369.54
Growth  +8595.1%
Annual growth 9.2%

78-3 Basic Set

Theme / Subtheme Samsonite / Basic Set
Year 1975
Pieces 330
Availability Retired
78-3 LEGO Samsonite Basic Set
Retail $4.99
Value $209.19
Growth  +4092.2%
Annual growth 4.3%

133 Locomotive

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 87
Availability Retired
133 LEGO Trains Locomotive
Retail $2.89
Value $733.26
Growth  +25272.3%
Annual growth 11.5%

134 Mobile Crane and Wagon

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 86
Availability Retired
134 LEGO Trains Mobile Crane and Wagon
Retail $2.49
Value $406.48
Growth  +16224.5%
Annual growth 10.5%

136 Tanker Wagon

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 83
Availability Retired
136 LEGO Trains Tanker Wagon
Retail $1.89
Value $206.08
Growth  +10803.7%
Annual growth 9.6%

137-2 Passenger Sleeping Car

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 82
Availability Retired
137-2 LEGO Trains Passenger Sleeping Car
Retail $1.89
Value $316.48
Growth  +16645.0%
Annual growth 10.6%

148 Central Station

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces / Minifigs 293 / 5
Availability Retired
148 LEGO Trains Central Station
Retail $19.99
Value $895.08
Growth  +4377.6%
Annual growth 7.7%

182 Train Set with Motor

Theme / Subtheme Trains / 4.5V / 12V
Year 1975
Pieces 369
Availability Retired
182 LEGO Train Set with Motor
Retail $19.99
Value $1,429.70
Growth  +7052.1%
Annual growth 8.7%

190 Farm Set

Year 1975
Pieces 526
Availability Retired
190 LEGO Farm Set
Retail $7.49
Value $400.00
Growth  +5240.5%
Annual growth 8.3%

195 Airplane

Year 1975
Pieces 89
Availability Retired
195 LEGO Airplane
Retail $5.49
Value $50.00
Growth  +810.7%
Annual growth 4.3%

253-2 Helicopter and Pilot

Year 1975
Pieces 1
Availability Retired
253-2 LEGO Helicopter and Pilot
Retail $1.49
Value $29.50
Growth  +1879.9%
Annual growth 6.1%

254 Family

Year 1975
Pieces 103
Availability Retired
254 LEGO Family
Retail $1.99
Value $98.58
Growth  +4853.8%
Annual growth 8.0%

255-2 Farming Scene

Year 1975
Pieces 120
Availability Retired
255-2 LEGO Farming Scene
Retail $2.29
Value $98.46
Growth  +4199.6%
Annual growth 6.4%

362 Windmill

Theme LEGOLAND
Year 1975
Pieces / Minifigs 215 / 2
Availability Retired
362 LEGOLAND Windmill
Retail $14.99
Value $702.72
Growth  +4587.9%
Annual growth 7.8%

363 Hospital

Theme LEGOLAND
Year 1975
Pieces / Minifigs 36 / 7
Availability Retired
363 LEGOLAND Hospital
Retail $9.99
Value $1,071.15
Growth  +10622.2%
Annual growth 9.6%

364 Harbor

Theme LEGOLAND
Year 1975
Pieces / Minifigs 518 / 7
Availability Retired
364 LEGOLAND Harbor
Retail $9.99
Value $840.00
Growth  +8308.4%
Annual growth 5.2%

365 Wild West

Theme LEGOLAND
Year 1975
Pieces / Minifigs 602 / 8
Availability Retired
365 LEGOLAND Wild West
Retail $9.99
Value $591.78
Growth  +5823.7%
Annual growth 5.9%

367 Space Module with Astronauts

Theme LEGOLAND
Year 1975
Pieces 364
Availability Retired
367 LEGOLAND Space Module with Astronauts
Retail $12.99
Value $717.22
Growth  +5421.3%
Annual growth 8.1%

390-2 1913 Cadillac

Theme Hobby Set
Year 1975
Pieces 200
Availability Retired
390-2 LEGO Hobby Set 1913 Cadillac
Retail $12.49
Value $1,535.62
Growth  +12194.8%
Annual growth 9.9%

391 1926 Renault

Theme Hobby Set
Year 1975
Pieces 237
Availability Retired
391 LEGO Hobby Set 1926 Renault
Retail $12.49
Value $1,203.97
Growth  +9539.5%
Annual growth 7.1%

392 Formula 1

Theme Hobby Set
Year 1975
Pieces 197
Availability Retired
392 LEGO Hobby Set Formula 1
Retail $12.49
Value $531.27
Growth  +4153.6%
Annual growth 7.6%

430 Biplane

Theme LEGOLAND
Year 1975
Pieces 18
Availability Retired
430 LEGOLAND Biplane
Retail $2.49
Value $87.06
Growth  +3396.4%
Annual growth 6.5%

480 Rescue Helicopter

Theme LEGOLAND
Year 1975
Pieces 62
Availability Retired
480 LEGOLAND Rescue Helicopter
Retail $1.00
Value $222.94
Growth  +22194.0%
Annual growth 9.0%

490 Mobile Crane

Theme LEGOLAND
Year 1975
Pieces 46
Availability Retired
490 LEGOLAND Mobile Crane
Retail $1.00
Value $119.06
Growth  +11806.0%
Annual growth 5.7%

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

580 Brick Yard

Theme LEGOLAND
Year 1975
Pieces 216
Availability Retired
580 LEGOLAND Brick Yard
Retail $13.99
Value $850.00
Growth  +5975.8%
Annual growth 7.3%

615-2 Forklift

Theme / Subtheme LEGOLAND / Vehicle
Year 1975
Pieces / Minifigs 21 / 1
Availability Retired
615-2 LEGOLAND Forklift
Retail $1.49
Value $114.26
Growth  +7568.5%
Annual growth 7.8%

659 Police Patrol

Theme LEGOLAND
Year 1975
Pieces / Minifigs 49 / 2
Availability Retired
659 LEGOLAND Police Patrol
Retail $2.50
Value $182.49
Growth  +7199.6%
Annual growth 6.8%

660 Air Transporter

Theme LEGOLAND
Year 1975
Pieces 39
Availability Retired
660 LEGOLAND Air Transporter
Retail $2.49
Value $102.13
Growth  +4001.6%
Annual growth 5.5%

692 Road Repair Crew

Theme LEGOLAND
Year 1975
Pieces / Minifigs 57 / 2
Availability Retired
692 LEGOLAND Road Repair Crew
Retail $1.25
Value $103.52
Growth  +8181.6%
Annual growth 9.0%

693 Fire Engine

Theme LEGOLAND
Year 1975
Pieces / Minifigs 72 / 3
Availability Retired
693 LEGOLAND Fire Engine
Retail $1.25
Value $144.33
Growth  +11446.4%
Annual growth 6.4%

694 Transport Truck

Theme / Subtheme LEGOLAND / Vehicle
Year 1975
Pieces 65
Availability Retired
694 LEGOLAND Transport Truck
Retail $5.49
Value $126.39
Growth  +2202.2%
Annual growth 7.3%

760-2 London Bus

Theme LEGOLAND
Year 1975
Pieces 110
Availability Retired
760-2 LEGOLAND London Bus
Retail $3.00
Value $276.22
Growth  +9107.3%
Annual growth 9.3%

814-2 Tractor

Year 1975
Pieces 93
Availability Retired
814-2 LEGO Tractor
Retail $2.98
Value $102.16
Growth  +3328.2%
Annual growth 7.2%