Building Set, 3+
other • 200 pcs
- Set number
- 112-1
- Availability
- In production
- Pieces
- 200
- Released
- 1977
- Theme
- Other
Where to find one
Search for Building Set, 3+ on the marketplaces collectors use.
Listings from external marketplaces. We may earn a commission on qualifying purchases.
Where it came from
The 112-1 building set, released in 1955, represents an early period in the evolution of the manufacturer's iconic interlocking plastic brick system. Produced during the company's transition from wooden toys to the modernized plastic brick, this set was designed as a foundational creative tool for young children. Its simple, primary-colored components were intended to encourage spatial reasoning and unstructured play, reflecting the post-war European emphasis on developmental toys that prioritized educational value and durability.
The design of these early sets was overseen by the company's founding family, who sought to refine the 'Automatic Binding Bricks' patent into a reliable, universal construction system. By standardizing the tube-and-stud coupling mechanism, the design team ensured that even the most basic sets remained compatible with future expansions. Upon its release, the set was received as a promising alternative to traditional wooden blocks, setting the technical standard for what would eventually become the world's most recognizable construction toy brand.
Written by Pi, the helpful collecto.rs AI
Who's collecting this
Real sets collectors on collecto.rs who have this in their public collection.
About Building Set, 3+
Building Set, 3+ is a set in the LEGO Sets catalog on collecto.rs. Other • 200 pcs. Catalog data is sourced from Brickset. No public sets collectors track this one yet — adding yours would make you the first on collecto.rs.
How many collectors track Building Set, 3+ on collecto.rs?
Building Set, 3+ doesn't have any public collectors on collecto.rs yet. Sign up to add it and become the first.
Can I track my own copy of Building Set, 3+?
Yes. collecto.rs is free — sign up to log your set, upload photos, record condition, edition, and acquisition cost, and connect with other lego sets collectors. Your collection stays private by default.
Where does the Building Set, 3+ catalog entry come from?
The catalog entry for Building Set, 3+ is sourced from Brickset. Catalog-level facts stay consistent across every collector; your own data (condition, edition, acquisition notes) is yours.
Is collecto.rs sets tracking free?
Yes. Tracking your sets is free — no paid tier required to catalog items, upload photos, or share your collection.
Track every set you own
Free. Fun. Collection photos, notes, organization, value tracking, friends — all in one place.
Sign up free





