brick'em
Sea Serpent

Sea Serpent

6057-1·Castle·1992·5 minifigs·51 parts

Used Avg
$67.96
New Avg
$482.77
Add to your inventoryScan the minifigs

About Sea Serpent

Sea Serpent (6057-1) is a LEGO Castle set released in 1992, currently averaging $67.96 used on BrickLink. It comes with 5 minifigures worth a combined $28.60. The set has retired from retail, so secondary market is the only option. The full parts inventory runs 51 pieces.

Part-out value

The minifigures account for about 42% of the set's value ($28.60 out of $67.96). The remaining value is in the parts and the set as a complete package. Selling complete will likely net more than parting out unless you have specific demand for the individual figures.

Seller notes

  • Sealed copies sell for $482.77 vs $67.96 used — a 610% premium. If you have this set new in sealed box (NISB), price it accordingly.
  • This is a vintage set (1992). Condition of the box and instructions significantly affects value. A complete set with original box and instructions can sell for well above the average.

Minifigures in Sea Serpent (5)

Black Falcon - Light Gray Legs with Black Hips, Dark Gray Chin-Guard
Black Falcon - Light Gray Legs with Black Hips, Dark Gray Chin-Guard
cas102$5.37
Black Falcon - Light Gray Legs with Black Hips, Black Neck-Protector
Black Falcon - Light Gray Legs with Black Hips, Black Neck-Protector
cas103$5.54
Scale Mail - Red with Blue Arms, Black Legs with Red Hips, Dark Gray Neck-Protector
Scale Mail - Red with Blue Arms, Black Legs with Red Hips, Dark Gray Neck-Protector
cas150$5.39
Scale Mail - Red with Black Arms, Light Gray Legs with Black Hips, Dark Gray Neck-Protector
Scale Mail - Red with Black Arms, Light Gray Legs with Black Hips, Dark Gray Neck-Protector
cas159$6.62
Breastplate - Black, Black Legs with Red Hips, Black Neck-Protector, Red Plastic Cape
Breastplate - Black, Black Legs with Red Hips, Black Neck-Protector, Red Plastic Cape
cas322$5.69

Parts (51)

Flag 2 x 2 Square with Flat Edge with Red Square and Yellow / Blue Dragon Pattern
Flag 2 x 2 Square with Flat Edge with Red Square and Yellow / Blue Dragon Pattern
Blue
Minifigure, Utensil Goblet
Minifigure, Utensil Goblet
Yellow
Plate 2 x 2 Corner
Plate 2 x 2 Corner
Black×2
Container, Barrel 2 x 2 x 2
Container, Barrel 2 x 2 x 2
Brown
Minifigure, Utensil Oar / Paddle
Minifigure, Utensil Oar / Paddle
Brown×4
Tile, Modified 1 x 1 with Clip
Tile, Modified 1 x 1 with Clip
Black×2
Minifigure, Weapon Crossbow
Minifigure, Weapon Crossbow
Dark Gray
Minifigure, Shield Oval with Blue and Red Dragon on Yellow Background Pattern
Minifigure, Shield Oval with Blue and Red Dragon on Yellow Background Pattern
Light Gray×2
Wedge, Plate 7 x 6 without Stud Notches (Boat Bow Plate)
Wedge, Plate 7 x 6 without Stud Notches (Boat Bow Plate)
Red×2
Boat, Bow Brick 6 x 6 x 1
Boat, Bow Brick 6 x 6 x 1
Black×4
Plate, Round 2 x 2 with Rounded Bottom (Boat Stud)
Plate, Round 2 x 2 with Rounded Bottom (Boat Stud)
Black×6
Brick 1 x 1
Brick 1 x 1
Black×2
Brick 1 x 6
Brick 1 x 6
Black×2
Plate 2 x 4
Plate 2 x 4
Black×4
Plate 1 x 2
Plate 1 x 2
Blue
Plate 1 x 2
Plate 1 x 2
Black×2
Slope 45 2 x 1
Slope 45 2 x 1
Blue×2
Slope 45 2 x 1
Slope 45 2 x 1
Black×3
Slope, Inverted 45 2 x 2 with Flat Bottom Pin
Slope, Inverted 45 2 x 2 with Flat Bottom Pin
Black×4
Slope, Inverted 45 2 x 1
Slope, Inverted 45 2 x 1
Black
Plate 1 x 6
Plate 1 x 6
Black×2
Slope, Inverted 33 3 x 2 with Flat Bottom Pin without Connections between Studs
Slope, Inverted 33 3 x 2 with Flat Bottom Pin without Connections between Studs
Black
Plate, Modified 1 x 2 with 1 Stud without Groove (Jumper)
Plate, Modified 1 x 2 with 1 Stud without Groove (Jumper)
Blue
Plate, Modified 1 x 2 with 1 Stud without Groove (Jumper)
Plate, Modified 1 x 2 with 1 Stud without Groove (Jumper)
Black×4
Plate 2 x 6
Plate 2 x 6
Red
Minifigure, Shield Triangular Short with Blue and Yellow Dragon on Red Background Pattern
Minifigure, Shield Triangular Short with Blue and Yellow Dragon on Red Background Pattern
Light Gray×4
Minifigure, Shield Triangular Short with Black and White Falcon with Blue Border Pattern
Minifigure, Shield Triangular Short with Black and White Falcon with Blue Border Pattern
Light Gray
Minifigure, Weapon Sword, Shortsword
Minifigure, Weapon Sword, Shortsword
Dark Gray×2
Minifigure, Weapon Axe, Halberd
Minifigure, Weapon Axe, Halberd
Brown
Antenna 4H - Round Top
Antenna 4H - Round Top
Black×4
Plate, Round 2 x 2 with Axle Hole
Plate, Round 2 x 2 with Axle Hole
Brown
Brick, Modified 1 x 1 with Headlight
Brick, Modified 1 x 1 with Headlight
Blue×2
Plate, Round 1 x 1
Plate, Round 1 x 1
Yellow×2
Plate, Round 1 x 1
Plate, Round 1 x 1
Black×3
Plate, Modified 1 x 1 with U Clip Thick (Vertical Grip)
Plate, Modified 1 x 1 with U Clip Thick (Vertical Grip)
Blue×2
Slope 33 3 x 1
Slope 33 3 x 1
Blue×6
Slope, Inverted 33 3 x 1
Slope, Inverted 33 3 x 1
Black×2
Boat, Mast 2 x 2 x 9 2/3 Bar with Slot on Top and 2 Finger Hinge on Two Sides
Boat, Mast 2 x 2 x 9 2/3 Bar with Slot on Top and 2 Finger Hinge on Two Sides
Black
Plate 1 x 10
Plate 1 x 10
Black
Flag 4 x 1 Wave Left
Flag 4 x 1 Wave Left
Yellow
Flag 4 x 1 Wave Left
Flag 4 x 1 Wave Left
Green
Minifigure, Weapon Pike / Spear - Handle with Round End
Minifigure, Weapon Pike / Spear - Handle with Round End
Brown
Minifigure, Weapon Bow, Longbow with Arrow Drawn
Minifigure, Weapon Bow, Longbow with Arrow Drawn
Brown
Plate, Modified 1 x 4 Offset
Plate, Modified 1 x 4 Offset
Black
Brick, Modified 1 x 1 with Studs on 4 Sides
Brick, Modified 1 x 1 with Studs on 4 Sides
Black×2
Bar 1 x 3 with Clip and Stud Holder (Robot Arm)
Bar 1 x 3 with Clip and Stud Holder (Robot Arm)
Black
Plate, Modified 1 x 1 with U Clip (Horizontal Grip)
Plate, Modified 1 x 1 with U Clip (Horizontal Grip)
Black×4
Castle Turret Top 4 x 8 x 2 1/3
Castle Turret Top 4 x 8 x 2 1/3
Blue×2
Minifigure, Plume Dragon Wheel, 3 on Sprue
Minifigure, Plume Dragon Wheel, 3 on Sprue
Red
Cloth Sail 12 x 10 with Red Flying Dragon Pattern
Cloth Sail 12 x 10 with Red Flying Dragon Pattern
White
String, Cord Medium Thickness   35cm
String, Cord Medium Thickness 35cm
Black

Common questions about Sea Serpent

How much is LEGO Sea Serpent (6057-1) worth?

Sea Serpent sells for an average of $67.96 used and $482.77 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 6057-1?

This set includes 5 minifigures: Black Falcon - Light Gray Legs with Black Hips, Dark Gray Chin-Guard ($5.37), Black Falcon - Light Gray Legs with Black Hips, Black Neck-Protector ($5.54), Scale Mail - Red with Blue Arms, Black Legs with Red Hips, Dark Gray Neck-Protector ($5.39), Scale Mail - Red with Black Arms, Light Gray Legs with Black Hips, Dark Gray Neck-Protector ($6.62), plus 1 more. The minifigures have a combined BrickLink value of $28.60. Each figure is linked above with individual pricing if you're looking to buy or sell specific characters.

Is it worth parting out LEGO Sea Serpent?

The minifigures make up about 42% of the set value ($28.60 out of $67.96). 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 Sea Serpent (6057-1) retired?

Yes, Sea Serpent was released in 1992 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 Sea Serpent set is complete?

Use the parts list on this page to check every piece and all 5 minifigures. 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.

Explore more

All Castle setsCastle minifiguresMost valuable Castle figsFree scanner