Historic
Cellulose Acetate Brick
The original LEGO brick material — beautiful, brittle, and slowly disappearing.
- Year
- 1949–1963
- Produced
- Limited surviving
- Est. value
- $200+
- Rarity
- Historic
The first plastic
Until 1963, LEGO bricks were molded in cellulose acetate. The material gave early bricks a creamy warmth — but it also warped, shrank, and discolored over decades, making well-preserved examples increasingly scarce.
Why collectors care
Cellulose acetate bricks document the birth of the modern interlocking system. Mint examples in original boxes — particularly the 1955 Town Plan sets — are among the most coveted artifacts in LEGO history.
