1. Sets
  2. 1973
  3. Universal Building Set

LEGO 1973 / Universal Building Set Sets

In 1973, LEGO released 11 Universal Building Set sets in the subtheme Basic Set, all of these sets have been retired. For that year, the total price of all retail sets cost $106, today those sets are valued around $4,226, a growth of 3894%.
Most valuable 1973 Universal Building Set set
4-3 Basic Set $704.01
Highest growth 1973 Universal Building Set set
1-7 Basic Set +9826.54%
Largest 1973 Universal Building Set set
8-3 Basic Set #8 776 pieces
Most owned 1973 Universal Building Set set
105-2 Building Set
11 sets

1-7 Basic Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 107
Availability Retired
1-7 LEGO Basic Set
Retail $5.99
Value $594.60
Growth  +9826.5%
Annual growth 10.0%

2-7 Basic Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 184
Availability Retired
2-7 LEGO Basic Set
Retail $7.99
Value $128.83
Growth  +1512.4%
Annual growth 7.2%

3-4 Basic Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 184
Availability Retired
3-4 LEGO Basic Set
Retail $7.99
Value $200.48
Growth  +2409.1%
Annual growth 3.4%

4-3 Basic Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 230
Availability Retired
4-3 LEGO Basic Set
Retail $8.99
Value $704.01
Growth  +7731.0%
Annual growth 8.6%

5-3 Basic Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 349
Availability Retired
5-3 LEGO Basic Set
Retail $6.99
Value $226.79
Growth  +3144.5%
Annual growth 7.4%

6-3 Basic Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 349
Availability Retired
6-3 LEGO Basic Set
Retail $12.99
Value $464.59
Growth  +3476.5%
Annual growth 7.0%

7-3 Basic Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 415
Availability Retired
7-3 LEGO Basic Set
Retail $15.99
Value $277.57
Growth  +1635.9%
Annual growth 5.5%

8-3 Basic Set #8

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 776
Availability Retired
8-3 LEGO Basic Set #8
Retail $19.00
Value $572.30
Growth  +2912.1%
Annual growth 6.6%

105-2 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 149
Availability Retired
105-2 LEGO Building Set
Retail $6.00
Value $358.27
Growth  +5871.2%
Annual growth 8.0%

115 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 190
Availability Retired
115 LEGO Building Set
Retail $5.99
Value $333.66
Growth  +5470.3%
Annual growth 5.0%

135 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 338
Availability Retired
135 LEGO Building Set
Retail $7.89
Value $364.80
Growth  +4523.6%
Annual growth 10.3%

Year Pricing

Retail
$105.81   (for all 11 sets)
New/Sealed
Value
$4,225.90
Growth
+3893.86%
Annual growth
+6.74%
Used
Value
$718.33

Subtheme Pricing

1973 / Universal Building Set
Annual growth
Basic Set
+6.74%

Subthemes

1973 / Universal Building Set
Sets
Basic Set
11

Community Stats

The following are the top 10 most owned 1973 Universal Building Set sets by LEGO collectors.
#1Building Set
#2Building Set
#3Basic Set
#4Basic Set
#5Building Set
#6Basic Set #8
#7Basic Set
#8Basic Set
#9Basic Set
#10Basic Set

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.
1973 LEGO Sets
1973 marked major structural and product milestones for LEGO. The company ended its U.S. licensing agreement with Samsonite and established LEGO Systems, Inc. in Brookfield, Connecticut, giving LEGO direct control over its American distribution. DUPLO was formally branded as a standalone preschool line, expanding on the larger bricks first introduced in 1969. Early Town sets began to appear with simple, posable figures—precursors to the modern minifigure—bringing more life and movement to everyday scenes. LEGO’s catalog continued to grow rapidly, reinforcing its position as a leading global toy brand.