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6721 LEGO Dinosaurs Mosasaurus thumbnail image

6721 LEGO Dinosaurs Mosasaurus
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6721 LEGO Dinosaurs Mosasaurus
  • Mosasaurus thumbnail
  • Mosasaurus thumbnail
  • Mosasaurus thumbnail
  • Mosasaurus thumbnail
  • Mosasaurus thumbnail

LEGO 6721 Mosasaurus is a Dinosaurs set from 2001 valued at $100 for new and sealed sets, up 901% from an original retail price of $9.99. Annual appreciation has averaged 9.72% since release. Used copies are valued between $34 and $45 depending on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Mosasaurus since June 2016. Very high accuracy
LEGO 6721 Mosasaurus is a Dinosaurs set released in 2001, containing 26 pieces. It builds a Mosasaurus and includes alternate instructions to rebuild it as an Iguanodon, Postosuchus, or Dimetrodon. The set is part of the early LEGO Dinosaurs line centered on small brick-built creature models with multiple build options.

A new and sealed Mosasaurus is currently valued at around $100, with annual growth of approximately 7%. The average used price is $37 for those in good overall condition. Based on current trends, this set could be valued near $109 within the next year. New and sealed listings currently range from $100 to $117.
All regions

For Sale (New/Sealed)

 (US) eBay listing for Mosasaurus $97.00
-3.0%
(US) This set is Brand New and Sealed. We are the original owner and bought it new off the... $100.00
(US) This set is Brand New and Sealed. We are the original owner and bought it new off the... $100.00
(KR) -MISB-Box: Normal $120.00
+20.0%
All regions

For Sale (Used)

 (NL) Used - no box, no instructions $34.17
(US) Used - Mosasaurus 6721-1 Dinosaurs Lego Minifigure
$35.00
--6.3%
(DE) Used - 1X Lego Animal Dinosaur Mosasaurus Sand Blue Fins Stone Dino Water 6721
$39.69
(US) Used - Animal Dinosaurs Set 6721-1 Dinosaurs MOSASAURUS Minifig
$44.00
(US) Used - Dinosaurs Mosasaurus 6721
$45.00

Sale Trends

This chart shows the sales trends (number sold) of new/sealed 6721 Mosasaurus.

Contained In Sets

9310 Dinosaurs Set

Theme Education
Year 2007
Pieces 96
Availability Retired
9310 LEGO Education Dinosaurs Set
Retail $108.99
Value $492.73
Growth  +352.1%
Annual growth 7.6%

4 Dinos in 1 Sets

6719 Brachiosaurus

Theme Dinosaurs
Year 2001
Pieces 25
Availability Retired
6719 LEGO Dinosaurs Brachiosaurus
Retail $9.99
Value $79.03
Growth  +691.1%
Annual growth 5.0%

6720 Tyrannosaurus Rex

Theme Dinosaurs
Year 2001
Pieces 23
Availability Retired
6720 LEGO Dinosaurs Tyrannosaurus Rex
Retail $9.99
Value $67.18
Growth  +572.5%
Annual growth 8.8%

6722 Styracosaurus

Theme Dinosaurs
Year 2001
Pieces 19
Availability Retired
6722 LEGO Dinosaurs Styracosaurus
Retail $9.99
Value $71.21
Growth  +612.8%
Annual growth 3.8%

Sets in Dinosaurs

5950 Baby Ankylosaurus

Theme Dinosaurs
Year 2001
Pieces 37
Availability Retired
5950 LEGO Dinosaurs Baby Ankylosaurus
Retail $2.99
Value $67.56
Growth  +2159.5%
Annual growth 9.3%

7000 Baby Ankylosaurus

Theme Dinosaurs
Year 2001
Pieces 37
Availability Retired
7000 LEGO Dinosaurs Baby Ankylosaurus
Retail $2.99
Value $18.65
Growth  +523.7%
Annual growth 4.8%

5952 Baby Brachiosaurus

Theme Dinosaurs
Year 2001
Pieces 31
Availability Retired
5952 LEGO Dinosaurs Baby Brachiosaurus
Retail $2.99
Value $15.50
Growth  +418.4%
Annual growth 3.4%

7002 Baby Brachiosaurus

Theme Dinosaurs
Year 2001
Pieces 31
Availability Retired
7002 LEGO Dinosaurs Baby Brachiosaurus
Retail $2.99
Value $23.56
Growth  +688.0%
Annual growth 8.9%

5951 Baby Iguanodon

Theme Dinosaurs
Year 2001
Pieces 23
Availability Retired
5951 LEGO Dinosaurs Baby Iguanodon
Retail $2.99
Value $13.52
Growth  +352.2%
Annual growth 6.1%

7001 Baby Iguanodon

Theme Dinosaurs
Year 2001
Pieces 23
Availability Retired
7001 LEGO Dinosaurs Baby Iguanodon
Retail $2.99
Value $38.14
Growth  +1175.6%
Annual growth 5.7%

5953 Baby Dimetrodon

Theme Dinosaurs
Year 2001
Pieces 20
Availability Retired
5953 LEGO Dinosaurs Baby Dimetrodon
Retail $2.99
Value $31.47
Growth  +952.5%
Annual growth 7.3%

7003 Baby Dimetrodon

Theme Dinosaurs
Year 2001
Pieces 20
Availability Retired
7003 LEGO Dinosaurs Baby Dimetrodon
Retail $2.99
Value $29.29
Growth  +879.6%
Annual growth 6.4%

My Collection

Mosasaurus Reviews

24 reviews
4.8
Collectors
Investors
BrickEconomy Expert Review
“The LEGO Dinosaur set from 2001, remembered for its articulation and imposing jaws, offers a blend of nostalgia and playability, particularly noted for its high-quality printing and detailed design. While not the most anatomically accurate, its charm lies in the blocky, simplistic aesthetic typical of early LEGO sets, which many find appealing. The set's versatility is enhanced by the inclusion of spare parts for alternate prehistoric builds, though the specialized pieces may limit their use in other contexts.”
 

About Dinosaurs

The LEGO Dinosaurs theme was released in 2001 and included different kinds of dinosaur models, in adult forms as well as smaller younger forms.
Summary
Dinosaurs Mosasaurus set 6721 was released in June 2001, retailing for $10, but has since been retired. New, unopened Mosasaurus sets are valued at $100, while used sets can be found for $37 in good condition.
Read more
The world has perhaps never seen a predator larger than the Mosasaurus! The size of a small seas feared absolutely nothing. Turn the giant Mosasaurus into three other distinctive and attractive dinosaur models — the set includes extra building instructions for Iguanodon, Postosuchus and Dimetrodon.
Description provided by LEGO©