How many pieces are in the Message Decoder?

Message Decoder contains 34 pieces.

When was the Message Decoder released?

Message Decoder was released in 1989.

🏛 Space Police I

Set #6831

Message Decoder

The Message Decoder is a charming slice of classic LEGO Space Police.

Before you buy

Who it's for: Beginner build Perfect for younger builders or those looking for a quick, nostalgic build
Build: 34 pieces · about 0.5 hours Build time is an estimate.
Price: $2.99 list price · 8.8¢ per piece
Availability: Likely retired

★★★★☆ 4.2 AI-generated review score, not a customer rating

Fans appreciate this set's nostalgic value and classic Space Police design. Some find the build simple, but collectors value its rarity and the iconic minifigure.

$2.99

Best Price

$2.69

You Save

10% OFF

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

The Message Decoder is a charming slice of classic LEGO Space Police. Released in 1989, this small set perfectly encapsulates the theme's futuristic aesthetic and focus on capturing space criminals, all in a fun, buildable package.

This set is perfect for LEGO Space enthusiasts and collectors of vintage sets. It's a quick and enjoyable build that offers a nostalgic trip back to the early days of LEGO Space Police, plus it's a great display piece for showing off your classic LEGO collection.

Skip this if you're only interested in large, complex sets. If you prefer modern building techniques and intricate designs, consider exploring newer LEGO Space themes like LEGO City Space or LEGO Ideas sets.

✨ New

Ask BlockTalk about this set

AI assistant with full set data

BlockTalk

Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the Message Decoder - building tips, investment potential, comparisons, or anything else!

Try asking:

What is the best way to display vintage LEGO sets like the Message Decoder? How does the Space Police I theme compare to later LEGO Space themes? What factors contribute to the increasing value of classic LEGO sets? Are there any common issues or missing parts to watch out for when buying this set used?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

Pieces

⏱

0.5h

Estimated Build Time

📊

Beginner

Difficulty

Build Highlights:

Simple, straightforward building process
Incorporates classic LEGO hinge techniques
Features a printed slope with the Space Police logo
Compact and easily displayable model

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

↑ Trending up since release

B+

Investment Grade

⏳ Retired

The Message Decoder presents a unique investment opportunity due to its age, theme, and relatively low piece count. As a classic Space Police I set from 1989, it carries significant nostalgic value for collectors. Its rising price trend indicates increasing demand, driven by the scarcity of sealed or complete sets. While the low piece count might deter some investors, the set's rarity and appeal to a niche market of vintage LEGO collectors contribute to its potential for appreciation. However, condition is critical; a set in pristine condition with original packaging will command a higher premium. The set's retirement risk is non-existent, it's been retired for decades!

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

Galactic Chief

Space Police I • 25 pcs

$2.25

Spy Runner

Space Police I • 43 pcs

$5.50

Particle Ionizer

Space Police I • 94 pcs

$12.50

The Message Decoder stands out as a classic example of early LEGO Space sets, characterized by its simplicity and charm. Compared to modern sets with intricate designs and high piece counts, this set offers a nostalgic building experience. While newer Space Police sets like 6984-1 Interstellar Starfighter offer more complex builds and advanced features, the Message Decoder appeals to collectors seeking a piece of LEGO history.

1 Minifigure Included

Space Police I

6 parts

B+

Includes one Space Police I minifigure, featuring the classic black and white uniform with the Space Police logo. This minifigure is a hallmark of the theme and adds to the set's collectible appeal.

📦 Parts Inventory

Piece count: 34
Parts cataloged in this inventory: 18 unique parts, 28 pieces
Minifigures: 1

The piece count includes the 6 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Plate Special 2 x...

Part #: 122c01 2× Black

Lever Small Base ...

Part #: 298c02 2× Black

Plate 2 x 4

Part #: 3020 1× Black

Plate 2 x 2

Part #: 3022 1× Black

Brick Sloped 45° ...

Part #: 3039 1× Blue

Brick Sloped 33° ...

Part #: 3298pr0013 1× Black

Wheel Arch, Mudgu...

Part #: 3787 2× Black

Plate 2 x 10

Part #: 3832 1× Black

Hinge Brick 1 x 2...

Part #: 3937 1× Blue

Hinge Brick 1 x 2...

Part #: 3938 1× Black

Antenna 1 x 4 wit...

Part #: 3957a 2× Black

Brick Special 1 x...

Part #: 4070 2× Blue

Wheel Balloon wit...

Part #: 4288 4× Black

Plate Special 1 x...

Part #: 4590 1× Black

Dish 2 x 2 Invert...

Part #: 4740 2× Trans-Red

Wedge Plate 3 x 4...

Part #: 4859 1× Blue

Bar 1 x 6 [Open S...

Part #: 4873 1× Black

Plate Round 1 x 1...

Part #: 6141 2× Trans-Red

The set includes several classic LEGO elements in black and trans-red, common for the Space Police I theme. The printed 'POLICE' slope is a standout piece, adding unique detail to the model.