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6057 LEGO Black Knights Sea Serpent thumbnail image

6057 LEGO Black Knights Sea Serpent
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6057 LEGO Black Knights Sea Serpent
  • Sea Serpent thumbnail
  • Sea Serpent thumbnail
  • Sea Serpent thumbnail
  • Sea Serpent thumbnail
  • Sea Serpent thumbnail
  • Sea Serpent thumbnail

LEGO 6057 Sea Serpent is a vintage Castle set from 1992 valued at $327 for new and sealed sets, up 2154% from an original retail price of $14.50. Annual appreciation has averaged 7.15% since release. On the used market, values range from $69 to $90 based on condition. Momentum for the set is fading, with a value that has eased in recent months, along with growth that trails similar sets.

Sea Serpent Value (New/Sealed)

This chart represents the current new/sealed value of the set Sea Serpent since October 2017. Very high accuracy
LEGO 6057 Sea Serpent is a Castle Black Knights set released in 1992, containing 126 pieces and 5 minifigures. The build is a dragon-prowed galley with a single square sail printed with the Black Knights emblem, side-mounted shields, and working oars; it is also known as Black Knight’s Ship. The lineup includes three Black Knights soldiers and two Black Falcons soldiers, the latter being the final Black Falcons minifigures to appear in a regular retail set of the era. Accessories include swords, pikes, and shields with the Black Knights crest.

Sealed copies of Sea Serpent go for about $327 today. Since it retired, the set has grown roughly 7.1% a year, and our forecast puts it near $346 by this time next year. The average used price is $75 for those in good overall condition. New and sealed listings currently range from $280 to $330. Recent market trends show a period of price correction, with values declining over the past year.
Collector and Investor Standing
Classic Castle factions still have a loyal following, and the Black Knights get a dragon ship of their own here. The sail, shields, and crew give collectors plenty to recognize, while the black knight in a red plastic cape appears in no other set. Plenty of members own or want this ship, which keeps investor interest strong.
86/100
Collector
In very high demand
Black knight in red cape is unique
72/100
Investor
Holds up better than most
Members own or want the dragon ship
All regions

For Sale (New/Sealed)

 (US) Castle: Sea Serpent (6057) FACTORY SEALED 1992
BrickEconomy Choice
$279.99
(US) Castle: Sea Serpent (6057) NISB $279.99
-14.3%
(US) Castle: Sea Serpent (6057) VINTAGE NEW IN SEALED BOX $325.00
-0.6%
(US) Castle: Sea Serpent (6057) 1992 Sealed Box Free Shipping $329.99
+1.0%
(US) System 6057 NEW Sea Serpent Set 1992 Complete $380.00
+16.3%
All regions

For Sale (Used)

 (US) Used - Vintage Lego Castle set 6057 - Sea Serpent; 100% complete w manual; no box
$70.00
-6.7%
(US) Used - Castle: Sea Serpent (6057) - Complete, Clean, w/ instructions
$75.00
(US) Used - Castle Black Knights Sea Serpent 6057
$75.00
(DE) Used - 6057 Castle Black Knights Knight's Sea Serpent Ship 1992
$77.92
(DE) Used - 6057 Castle Black Knights Knight's Sea Serpent Ship 1992
$79.62
(DE) Used - Knights 6057 Sea Serpent Castle Black Knights incl. BA and original packaging
$89.91

Market Momentum

Bearish
This set's value is slipping and it is lagging its theme.
DemandTop 5% in Castle
Very high demand
12 months agoToday
Supply
Listings steady
New copies listed online, this week
Fewer than most in Castle
Growth vs peers+9% typical for Black Knights
-15% over the past year
12 months agoToday
Outlook:52% bearish·38% neutral·10% bullish
Why it's moving, signals and outlook

Compared with other Black Knights sets

Sea Serpent is the weakest performer among the Black Knights sets, mainly because similar sets gained over the past year while it slipped. Its launch price was several times that of most sets above it.

#12 of 12
By growth since retail, +2,154%
+2,154%+9,363%
The weakest performer in the group.
$2.59 a piece
New and sealed value per piece
This set
$2.59
Typical
$3.65
About 30% below the group's typical value per piece.
#3 of 14
Used value as a share of new, 23%
9%27%
In the top quarter of the group.
#11 of 14 retired
Wanted for each member who owns it
This set
Typical
About half the rate of the group's retired sets.
Top sets by growthSince retail
11547 Black Knights Boat+9,363%
21888 Black Knights Guardshack+5,192%
31917 King's Catapult+4,977%
126057 Sea Serpent+2,154%

Sets in Castle / Black Knights

6085 Black Monarch's Castle

Theme / Subtheme Castle / Black Knights
Year 1988
Pieces / Minifigs 702 / 12
Availability Retired
6085 LEGO Black Knights Black Monarch's Castle
Retail $67.95
Value $2,336.00
Growth  +3337.8%
Annual growth 9.6%

6086 Black Knight's Castle

Theme / Subtheme Castle / Black Knights
Year 1992
Pieces / Minifigs 588 / 12
Availability Retired
6086 LEGO Black Knight's Castle
Retail $84.99
Value $3,894.43
Growth  +4482.2%
Annual growth 5.5%

6059 Knight's Stronghold

Theme / Subtheme Castle / Black Knights
Year 1990
Pieces / Minifigs 224 / 5
Availability Retired
6059 LEGO Black Knights Knight's Stronghold
Retail $21.99
Value $682.88
Growth  +3005.4%
Annual growth 5.1%

1547 Black Knights Boat

Theme / Subtheme Castle / Black Knights
Year 1993
Pieces / Minifigs 58 / 2
Availability Retired
1547 LEGO Black Knights Boat
Retail $4.25
Value $402.18
Growth  +9363.1%
Annual growth 10.0%

6018 Battle Dragon

Theme / Subtheme Castle / Black Knights
Year 1990
Pieces / Minifigs 56 / 2
Availability Retired
6018 LEGO Black Knights Battle Dragon
Retail $4.49
Value $192.11
Growth  +4178.6%
Annual growth 7.4%

1888 Black Knights Guardshack

Theme / Subtheme Castle / Black Knights
Year 1992
Pieces / Minifigs 49 / 2
Availability Retired
1888 LEGO Black Knights Guardshack
Retail $3.49
Value $184.68
Growth  +5191.7%
Annual growth 12.4%

1491 Dual Defender

Theme / Subtheme Castle / Black Knights
Year 1992
Pieces / Minifigs 48 / 2
Availability Retired
1491 LEGO Black Knights Dual Defender
Retail $3.49
Value $169.52
Growth  +4757.3%
Annual growth 5.7%

6034 Black Monarch's Ghost

Theme / Subtheme Castle / Black Knights
Year 1990
Pieces / Minifigs 46 / 2
Availability Retired
6034 LEGO Black Knights Black Monarch's Ghost
Retail $7.25
Value $295.66
Growth  +3978.1%
Annual growth 7.7%

1971 Battering Ram

Theme / Subtheme Castle / Black Knights
Year 1993
Pieces / Minifigs 36 / 1
Availability Retired
1971 LEGO Black Knights Battering Ram
promotional
Value $242.18
Annual growth 6.7%

6009 Black Knight

Theme / Subtheme Castle / Black Knights
Year 1992
Pieces / Minifigs 24 / 1
Availability Retired
6009 LEGO Castle Black Knight
Retail $3.25
Value $115.00
Growth  +3438.5%
Annual growth 7.0%

1624 King's Archer

Theme / Subtheme Castle / Black Knights
Year 1993
Pieces / Minifigs 22 / 1
Availability Retired
1624 LEGO Black Knights King's Archer
Retail $2.49
Value $84.90
Growth  +3309.6%
Annual growth 11.3%

1917 King's Catapult

Theme / Subtheme Castle / Black Knights
Year 1993
Pieces / Minifigs 22 / 1
Availability Retired
1917 LEGO Black Knights King's Catapult
Retail $1.99
Value $101.03
Growth  +4976.9%
Annual growth 9.2%

2890 Stone Bomber

Theme / Subtheme Castle / Black Knights
Year 1998
Pieces / Minifigs 22 / 1
Availability Retired
2890 LEGO Black Knights Stone Bomber
promotional
Value $71.20
Annual growth 9.0%

Sea Serpent Questions

What is the current value of LEGO 6057 Sea Serpent?

Sealed in its box, Sea Serpent is currently valued at $327. Its value has eased 19% over the last 90 days. Used copies are worth about $75.

Is LEGO 6057 Sea Serpent retired?

Yes. LEGO no longer makes Sea Serpent. Sealed copies are now found only on the secondary market, so the price follows what collectors will pay.

How much has LEGO 6057 Sea Serpent gone up in value?

Sea Serpent has gained 2,154% on its original retail price of $14.50, or roughly 7.1% a year on average. That matches the Black Knights average of 7.1% a year closely.

What will LEGO 6057 Sea Serpent be worth next year?

In twelve months, Sea Serpent could be worth around $346, about 6% more than today. That is the view for the year ahead. In the short term the market reads bearish. Signals from demand, supply and price point down. Like any forecast, this is an estimate.

How many pieces and minifigures are in LEGO 6057 Sea Serpent?

The set contains 126 pieces ($0.12 a piece at its retail price), with 5 minifigures: Black Falcon Guard (2), Black Knight with Breastplate and Scale Mail Guard (2). Together the minifigures are worth about $224, about 69% of the set's value, and Black Falcon Guard is the most valuable at $55. None of them appears in any other set.

Top lists

My Collection

Sea Serpent Reviews

28 reviews
4.8
Collectors
Investors
Steve's LEGO Blog
“The Falcon’s in this set are merely antagonists and the only thing to really note here is the unusual grey helm on the archer and the grey trousers on both of them... As these were the last Falcon’s to be released (ever) they could be the final warriors fleeing the land.”
Full review at legosteveblog.blogspot.com
Playing with Bricks
“This set comes highly recommended. Five figures for the price (at least back when you could buy the set in stores) was a steal. For adults, the set does offer a few unique pieces (and a great chance to army build) but there isn't a lot else you can build with the set... More itself.”
Full review at playingwithbricks.blogspot.com
Excerpts from third-party reviews

About Castle Black Knights

The Black Knights were a faction of the Castle theme introduced in 1998. A total of 13 sets were released containing 3 major castles. Most of the castles and fortification where colored black and their symbol was a wyvern dragon. While The Black Knights subtheme was discontinued after 1994 the crest was still used in later sets.

Black Knights consists of 14 sets that ran from 1988 to 1998. As of today, 6086 Black Knight's Castle is the most valuable Black Knights set with an estimated new/sealed value of $3,894.
Summary
Castle Black Knights Sea Serpent set 6057 was released in March 1992, retailing for $15, but has since been retired. New, unopened Sea Serpent sets are valued at $327, while used sets can be found for $75.
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The Black Knights rule the seas with their mighty dragon ship! Equipped with sail, shields, and crew, they strike from the water to defend their castle stronghold.
Description provided by LEGO©