1. Sets
  2. 1971
  3. Universal Building Set

LEGO 1971 / Universal Building Set Sets

In 1971, LEGO released 5 Universal Building Set sets in the subtheme Supplemental, all of these sets have been retired. For that year, the total price of all retail sets cost $10, today those sets are valued around $201, a growth of 1930%.
Most valuable 1971 Universal Building Set set
990 Trees and Signs $128.94
Largest 1971 Universal Building Set set
795 2 Large Baseplates Red/Blue 2 pieces
Most owned 1971 Universal Building Set set
798 2 Medium Baseplates Green
5 sets

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 $21.30
Growth  +1051.4%
Annual growth 4.5%

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 $15.21
Growth  +722.2%
Annual growth 3.9%

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 $18.15
Growth  +485.5%
Annual growth 3.5%

990 Trees and Signs

Theme / Subtheme Universal Building Set / Supplemental
Year 1971
Availability Retired
990 LEGO Trees and Signs
Retail $1.25
Value $128.94
Growth  +10215.2%
Annual growth 6.9%

Year Pricing

Retail
$9.90   (for all 5 sets)
New/Sealed
Value
$200.96
Growth
+1929.90%
Annual growth
+3.96%
Used
Value
$100.86

Subtheme Pricing

1971 / Universal Building Set
Annual growth
Supplemental
+3.96%

Subthemes

1971 / Universal Building Set
Sets
Supplemental
5

Community Stats

The following are the top 5 most owned 1971 Universal Building Set sets by LEGO collectors.
#12 Medium Baseplates Green
#22 Large Baseplates Red/Blue
#32 Large Baseplates Grey/White
#4Trees and Signs
#52 Large Baseplates Green/Yellow

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.
1971 LEGO Sets
In 1971, LEGO broadened its audience with new dollhouse and furniture sets aimed at girls, expanding its reach beyond traditional building themes. In Italy, the Minitalia range grew under import restrictions, offering locally produced sets compatible with the LEGO System. The year also introduced the 1×8×2 arch brick, adding architectural variety. These developments highlighted LEGO’s increasing design diversity and adaptability to regional markets.