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125-2 LEGO Universal Building Set thumbnail image

125-2 LEGO Universal Building Set
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125-2 LEGO Universal Building Set
  • Universal Building Set thumbnail

LEGO 125 Universal Building Set is a vintage Universal Building Set set from 1974 valued at $347 for new and sealed sets, up 2068% from an original retail price of $15.99. Annual appreciation has averaged 5.99% since release. Used copies are valued between $24 and $30 depending on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Universal Building Set since May 2020. High accuracy
LEGO 125-2 Universal Building Set is a Universal Building Set/Basic Set released in 1974, containing 234 pieces. Issued exclusively in the United States and also known as “125 Building Set,” it is equivalent to set 4 Basic Set from 1973. The assortment includes classic bricks in primary colors along with functional elements such as fixed-glass windows and matching door frames. Notable parts include a green 10x20 brick with bottom tubes and a transparent modified 2x4 brick with a wheel holder, supporting basic vehicle and structure builds.

A new and sealed Universal Building Set is currently valued at around $347, with annual growth of approximately 4%, which is lower than other Basic Set sets. The average used price is $25 for those in good overall condition. Based on current trends, this set could be valued near $367 within the next year. New and sealed listings currently range from $299 to $421.
All regions

For Sale (New/Sealed)

 (US) Universal Building Set: Building Set (115)- Brand New In Factory Sealed Box
BrickEconomy Choice
$299.00
(US) - Brand New, Sealed in Box Good condition, with price sticker. $350.00
+1.0%
(US) NEW SEALED LEGO 145-1 Universal Building Set - RETIRED Universal Building Set $420.95
+21.5%
All regions

For Sale (Used)

 (US) Used - Vtg Special Features LEGO 125 Universal Building Set
$24.00
-5.0%
(US) Used - Universal Building Set: Universal Building Set (145) (uncounted)
$25.00
-1.1%

Sets in Universal Building Set / Basic Set

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 $453.99
Growth  +2289.4%
Annual growth 6.2%

088 4.5V Super Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1969
Pieces 615
Availability Retired
088 LEGO 4.5V Super Set
Retail $59.99
Value $3,504.76
Growth  +5742.2%
Annual growth 5.9%

404 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces / Minifigs 467 / 3
Availability Retired
404 LEGO Building Set
Retail $39.99
Value $409.01
Growth  +922.8%
Annual growth 4.8%

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 $279.55
Growth  +1648.3%
Annual growth 5.6%

402 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces / Minifigs 401 / 4
Availability Retired
402 LEGO Building Set
Retail $24.99
Value $433.41
Growth  +1634.3%
Annual growth 4.2%

114 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces 390
Availability Retired
114 LEGO Building Set
Retail $24.99
Value $342.57
Growth  +1270.8%
Annual growth 5.5%

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 $301.04
Growth  +4206.7%
Annual growth 7.6%

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 $469.50
Growth  +3514.3%
Annual growth 7.0%

135 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 338
Availability Retired
135 LEGO Building Set
Retail $7.89
Value $353.66
Growth  +4382.4%
Annual growth 8.8%

145 Universal Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1974
Pieces 338
Availability Retired
145 LEGO Universal Building Set
Retail $19.99
Value $373.28
Growth  +1767.3%
Annual growth 2.8%

400 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces / Minifigs 294 / 3
Availability Retired
400 LEGO Building Set
Retail $24.99
Value $536.60
Growth  +2047.3%
Annual growth 6.5%

113 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces 293
Availability Retired
113 LEGO Building Set
Retail $16.99
Value $112.52
Growth  +562.3%
Annual growth 3.9%

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 $714.29
Growth  +7845.4%
Annual growth 8.6%

112 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces 200
Availability Retired
112 LEGO Building Set
Retail $18.99
Value $224.34
Growth  +1081.4%
Annual growth 5.0%

115 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1973
Pieces 190
Availability Retired
115 LEGO Building Set
Retail $5.99
Value $322.12
Growth  +5277.6%
Annual growth 5.5%

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 $130.00
Growth  +1527.0%
Annual growth 7.4%

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 $174.04
Growth  +2078.2%
Annual growth 3.3%

111 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces 173
Availability Retired
111 LEGO Building Set
Retail $12.99
Value $150.99
Growth  +1062.4%
Annual growth 5.1%

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 $353.60
Growth  +5793.3%
Annual growth 8.0%

110 Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1977
Pieces 131
Availability Retired
110 LEGO Building Set
Retail $9.99
Value $269.99
Growth  +2602.6%
Annual growth 7.2%

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 $508.78
Growth  +8393.8%
Annual growth 9.8%

140-2 Bricks 'n Motor Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1969
Pieces 96
Availability Retired
140-2 LEGO Bricks 'n Motor Set
Retail $6.95
Value $763.71
Growth  +10888.6%
Annual growth 8.6%

070 Universal Building Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1966
Availability Retired
070 LEGO Universal Building Set
Retail $15.50
Value $859.39
Growth  +5444.5%
Annual growth 6.9%

My Collection

Universal Building Set Reviews

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About Universal Building Set Basic Set

The LEGO Universal Building Set Basic Sets theme, active from 1966 to 1977, provided a foundation for creative building with a variety of versatile bricks and elements. These sets were designed to encourage open-ended construction and imagination, featuring an assortment of basic bricks, plates, windows, and doors. They allowed builders to create anything from simple structures to more complex models, laying the groundwork for LEGO's emphasis on creativity and versatility. Key sets in this theme include 088 4.5V Super Set, which introduced motorized components powered by a 4.5-volt battery, enhancing the complexity and functionality of LEGO creations.

Basic Set consists of 24 sets that ran from 1966 to 1977. As of today, 088 4.5V Super Set is the most valuable Basic Set set with an estimated new/factory sealed value of $3,505.
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