1. Sets
  2. Universal Building Set
  3. Supplemental

LEGO Universal Building Set / Supplemental Sets

Supplemental is a subtheme of Universal Building Set that consists of 8 sets that ran from 1969 to 1976. Most sets were released in 1971 which accounted for 5 sets. As of today, the average annual growth of sets in Universal Building Set Supplemental is approximately 4.2% per year.
Most valuable Universal Building Set Supplemental set
990-2 Trees and Signs $171.81
Largest Universal Building Set Supplemental set
103 4.5V Motor Set with Rubber Tracks 32 pieces
Most owned Universal Building Set Supplemental set
901 Universal Motor Set
The LEGO Universal Building Set Supplemental theme, active from 1969 to 1976, offered additional elements to enhance and expand basic LEGO sets. Key sets include 990-2 Trees and Signs and its earlier variant 990 Trees and Signs, which provided decorative elements to add realism to LEGO creations. The 797 2 Large Baseplates Grey/White set offered foundational pieces for building larger and more stable structures. The 103 4.5V Motor Set with Rubber Tracks introduced motorized movement, allowing builders to create moving vehicles and machines.
8 sets

901 Universal Motor Set

Theme / Subtheme Universal Building Set / Supplemental
Year 1976
Pieces 31
Availability Retired
901 LEGO Universal Motor Set
Retail $23.99
Value $131.88
Growth  +449.7%
Annual growth 3.5%

795 2 Large Baseplates Red/Blue

Theme / Subtheme Universal Building Set / Supplemental
Year 1971
Pieces 2
Availability Retired
795 LEGO 2 Large Baseplates Red/Blue
Retail $1.85
Value $21.36
Growth  +1054.6%
Annual growth 4.6%

796 2 Large Baseplates Green/Yellow

Theme / Subtheme Universal Building Set / Supplemental
Year 1971
Pieces 2
Availability Retired
796 LEGO 2 Large Baseplates Green/Yellow
Retail $1.85
Value $17.51
Growth  +846.5%
Annual growth 4.2%

797 2 Large Baseplates Grey/White

Theme / Subtheme Universal Building Set / Supplemental
Year 1971
Pieces 2
Availability Retired
797 LEGO 2 Large Baseplates Grey/White
Retail $1.85
Value $17.36
Growth  +838.4%
Annual growth 4.2%

798 2 Medium Baseplates Green

Theme / Subtheme Universal Building Set / Supplemental
Year 1971
Pieces 2
Availability Retired
798 LEGO 2 Medium Baseplates Green
Retail $3.10
Value $16.40
Growth  +429.0%
Annual growth 3.3%

990 Trees and Signs

Theme / Subtheme Universal Building Set / Supplemental
Year 1971
Availability Retired
990 LEGO Trees and Signs
Retail $1.25
Value $131.18
Growth  +10394.4%
Annual growth 6.8%

103 4.5V Motor Set with Rubber Tracks

Theme / Subtheme Universal Building Set / Supplemental
Year 1969
Pieces 32
Availability Retired
103 LEGO 4.5V Motor Set with Rubber Tracks
Retail $7.25
Value $170.40
Growth  +2250.3%
Annual growth 5.7%

990-2 Trees and Signs

Theme / Subtheme Universal Building Set / Supplemental
Year 1969
Pieces 13
Availability Retired
990-2 LEGO Trees and Signs
Retail $1.25
Value $171.81
Growth  +13644.8%
Annual growth 5.8%

Subtheme Pricing

Retail
$42.39   (for all 8 sets)
New/Sealed
Value
$677.90
Growth
+1499.20%
Annual growth
+4.16%
Used
Value
$220.05

Yearly Pricing

Sets
Retail
Value
1976
1
$23.99
$131.88
1971
5
$9.90
$203.81
1969
2
$8.50
$342.21

Community Stats

The following are the top 8 most owned sets by collectors in Universal Building Set Supplemental.
#1Universal Motor Set
#24.5V Motor Set with Rubber Tracks
#32 Large Baseplates Red/Blue
#42 Medium Baseplates Green
#52 Large Baseplates Grey/White
#6Trees and Signs
#72 Large Baseplates Green/Yellow
#8Trees and Signs

About LEGO Universal Building Set

LEGO's Universal Building Sets theme was released as early as 1966 but it was not until 1973 that the Basic LEGO sets became known as Universal Building Sets. These sets were produced in two set version numbers, the first was for sets that were sold in the UK, Europe, Canada and Australia. The other version numbers, but for the same exact set with the same box artwork was released in the United States. Most, but not all sets between 1973 and 1981 were sold in both regions.