Robotics Invention System Upgrade Kit is part of the Seer series of building blocks, the entire set contains 1 building block particle. Lego 3805 was first launched in 2001.

Relate Links

Brickset http://brickset.com/sets/3805-1

rebrickable https://rebrickable.com/sets/3805-1

Town Zero. http://www.town0.com/sets/3805.html

Brick Insights Rating https://brickinsights.com/sets/3805-1

bricklink https://www.bricklink.com/v2/catalog/catalogitem.p...

BRICKER foreign evaluation finishing summary. http://bricker.info/sets/3805/

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