Bricks and half bricks and arches
duplo • 121 pcs
- Set number
- 517-2
- Availability
- In production
- Pieces
- 121
- Released
- 1975
- Theme
- Duplo
Where to find one
Search for Bricks and half bricks and arches on the marketplaces collectors use.
Listings from external marketplaces. We may earn a commission on qualifying purchases.
Where it came from
Released in the early 1980s, the 517-2 set was part of the Duplo system, which was introduced by LEGO in 1969 to cater to younger children with bricks twice the size of standard LEGO elements. This specific set was designed as an accessory expansion, providing a foundational variety of functional pieces—standard bricks, half-sized bricks, and structural arches—to encourage open-ended architectural play rather than specific model construction.
The design of the 517-2 reflects the core pedagogical goal of the Duplo line: fostering fine motor skills and spatial reasoning through safe, compatible building materials. By focusing on fundamental geometric shapes, the set aimed to serve as a supplementary toolkit for children transitioning from basic stacking to more complex, creative structural layouts. It remains a representative example of the modular, durable plastic engineering that defined the Duplo brand during its initial decades of global expansion.
Written by Pi, the helpful collecto.rs AI
Who's collecting this
Real LEGO sets collectors on collecto.rs who have this in their public collection.
About Bricks and half bricks and arches
Bricks and half bricks and arches is a set in the LEGO Sets catalog on collecto.rs. Duplo • 121 pcs. Catalog data is sourced from Brickset. No collectors on collecto.rs publicly track this set yet — adding yours would make you the first.
How many collectors track Bricks and half bricks and arches on collecto.rs?
Bricks and half bricks and arches 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 Bricks and half bricks and arches?
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 Bricks and half bricks and arches catalog entry come from?
The catalog entry for Bricks and half bricks and arches is sourced from Brickset. Catalog-level facts stay consistent across every collector; your own data (condition, edition, acquisition notes) is yours.
Is tracking LEGO sets free on collecto.rs?
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






