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Message Decoder

Message Decoder

6831-1·Space·1989·1 minifig·19 parts

Used Avg
$10.83
New Avg
$191.25
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About Message Decoder

Message Decoder (6831-1) is a LEGO Space set released in 1989, currently averaging $10.83 used on BrickLink. It comes with 1 minifigure worth a combined $5.81. The set has retired from retail, so secondary market is the only option. The full parts inventory runs 19 pieces.

Part-out value

Minifig value: $5.81 out of $10.83 total (54%). Over half the set's resale value is in the figures. Sellers parting this set out should list the minifigs individually on BrickLink — they'll earn more than bundling everything together.

Seller notes

  • Sealed copies sell for $191.25 vs $10.83 used — a 1665% premium. If you have this set new in sealed box (NISB), price it accordingly.

Minifigures in Message Decoder (1)

Space Police 1
Space Police 1
sp036$5.81

Parts (19)

Plate, Modified 2 x 2 with Red Wheels
Plate, Modified 2 x 2 with Red Wheels
Black×2
Minifigure, Visor Standard
Minifigure, Visor Standard
Trans-Red
Plate 2 x 4
Plate 2 x 4
Black
Plate 2 x 2
Plate 2 x 2
Black
Slope 45 2 x 2
Slope 45 2 x 2
Blue
Slope 33 3 x 2 with Space Police I Logo Pattern
Slope 33 3 x 2 with Space Police I Logo Pattern
Black
Vehicle, Mudguard 2 x 4 with Arch Smooth
Vehicle, Mudguard 2 x 4 with Arch Smooth
Black×2
Plate 2 x 10
Plate 2 x 10
Black
Hinge Brick 1 x 2 Base
Hinge Brick 1 x 2 Base
Blue
Hinge Brick 1 x 2 Top Plate
Hinge Brick 1 x 2 Top Plate
Black
Antenna 4H - Round Top
Antenna 4H - Round Top
Black×2
Brick, Modified 1 x 1 with Headlight
Brick, Modified 1 x 1 with Headlight
Blue×2
Plate, Round 1 x 1, 2 on Sprue
Plate, Round 1 x 1, 2 on Sprue
Trans-Red
Wheel Full Rubber Balloon with Axle Hole
Wheel Full Rubber Balloon with Axle Hole
Black×4
Plate, Modified 1 x 4 Offset
Plate, Modified 1 x 4 Offset
Black
Antenna Small Base with Black Lever (4592 / 4593)
Antenna Small Base with Black Lever (4592 / 4593)
Black×3
Dish 2 x 2 Inverted (Radar)
Dish 2 x 2 Inverted (Radar)
Trans-Red×2
Wedge, Plate 3 x 4 without Stud Notches
Wedge, Plate 3 x 4 without Stud Notches
Blue
Bar 1 x 6 with Open Studs
Bar 1 x 6 with Open Studs
Black

Common questions about Message Decoder

How much is LEGO Message Decoder (6831-1) worth?

Message Decoder sells for an average of $10.83 used and $191.25 new/sealed on BrickLink based on 6 months of completed sales. As a retired set, prices tend to hold steady or appreciate over time, especially for complete sets with original packaging. Actual prices vary with completeness — missing minifigures or key parts will lower the value.

What minifigures come in LEGO set 6831-1?

This set includes 1 minifigure: Space Police 1 ($5.81). The minifigures have a combined BrickLink value of $5.81. Each figure is linked above with individual pricing if you're looking to buy or sell specific characters.

Is it worth parting out LEGO Message Decoder?

The minifigures make up about 54% of the set value ($5.81 out of $10.83). Most of the value is in the complete set package, so selling it whole is likely the better move unless you have buyers lined up for specific figures.

Is LEGO Message Decoder (6831-1) retired?

Yes, Message Decoder was released in 1989 and has been retired from retail for several years. Retired LEGO sets are only available on the secondary market through BrickLink, eBay, or other resale platforms.

How do I check if my Message Decoder set is complete?

Use the parts list on this page to check every piece and all 1 minifigure. For the minifigures specifically, you can use the brick'em scanner to identify each figure from a photo and confirm it matches what should be in this set. Missing pieces can be individually sourced on BrickLink.

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