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Set 6901 Mobile Lab
Space Classic Space

LEGO® Mobile Lab

Mobile Lab (6901-1) is a Classic Space set from 1980. It has 139 pieces, two minifigures and trans-green and trans-red elements.

Set number
6901
Year
1980
Pieces
139
Minifigures
2
Theme
Classic Space
Different parts
43
What can I build with it?

Parts list 43

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Minifigures 2

Description

Science on another world

Space was a fresh theme in 1980, and this set from LEGO® shows a research unit that travels across other planets. The Mobile Lab is a vehicle with a body on top, where two astronauts can examine samples or take readings. At 139 pieces it stays compact and does not take long to build. A nice detail is that the story is already in the name, so you do not have to think hard about what the crew is doing here.

Light grey and see-through parts

Light grey and black provide the technical framework, while trans-green and trans-red parts add some glow. It is mostly the transparent bricks that give the vehicle the look of a laboratory with displays and warning lights. Of the 139 pieces, 40 are different, so the parts list stays easy to scan. When rebuilding, watch the transparent elements: in old sets they are often scratched or yellowed, and they are among the parts you are most likely to reorder.

Two astronauts for the scene

Two minifigures turn the set into a small mission. One drives while the other works in the lab, or both get out and explore the surroundings. The vehicle fits well with other Classic Space sets and also serves as a base for your own models. On a shelf the plain colours give it a calm look, and it combines easily with other spacecraft from the same period.

Check your parts and reuse them

Enter the bricks you own into “What can I build?” to see how close your collection comes to the lab. Light grey and black bricks turn up in nearly every box, transparent ones less often. The parts list shows which shapes and colours are missing so that you can buy them individually, which turns a handful of absent bricks into a small order rather than a whole new purchase.

FAQ

How many pieces does Mobile Lab have?
The set has 139 pieces, 40 of them different parts, plus two minifigures.
Which theme is 6901-1 part of?
It belongs to Space, specifically the Classic Space line, and came out in 1980.
Which colours are typical?
Light grey and black dominate, with trans-green and trans-red accents.

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