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420-3 LEGO 2x2 Bricks thumbnail image

420-3 LEGO 2x2 Bricks
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420-3 LEGO 2x2 Bricks
  • 2x2 Bricks thumbnail

LEGO 420 2x2 Bricks is a vintage Classic set from 1966 valued at $18 for new and sealed sets, up 3472% from an original retail price of $0.50. Annual appreciation has averaged 4.92% since release. Used copies are valued between $15 and $19 depending on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set 2x2 Bricks since June 1966. Medium accuracy
LEGO 420-3 2x2 Bricks is a Classic Supplemental set released in 1966, containing 20 pieces. It consists of Brick 2 x 2 without inside supports (part 3003old), reflecting the early hollow-core design used at the time. The pack was offered as single-color assortments in blue, red, white, or yellow, or as a mixed variant with 10 black and 10 trans-clear elements. Sold as LEGO The Building Toy, it served as a parts supplement for expanding basic building sets of the era.

A new and sealed 2x2 Bricks is currently valued at around $18, with annual growth of approximately 5%. The average used price is $15 for those in good overall condition. Based on current trends, this set could be valued near $19 within the next year.
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For Sale (New/Sealed)

 (US) Brick 2 x 2 x 2 Gray, Red, Black Astromech Droid Pattern, Star Wars inv.420
BrickEconomy Choice
$19.99

Sets in Classic / Supplemental

471 Tiles

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 52
Availability Retired
471 LEGO Tiles
Retail $0.50
Value $28.61
Growth  +5622.0%
Annual growth 4.6%

423-4 Curved and Round Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 50
Availability Retired
423-4 LEGO Curved and Round Bricks
Retail $0.50
Value $46.39
Growth  +9178.0%
Annual growth 5.5%

434 50 Lettered Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 50
Availability Retired
434 LEGO 50 Lettered Bricks
Retail $0.50
Value $53.29
Growth  +10558.0%
Annual growth 6.9%

437 50 Numbered Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 50
Availability Retired
437 LEGO 50 Numbered Bricks
Retail $0.50

421 1x2 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 44
Availability Retired
421 LEGO 1x2 Bricks
Retail $0.50
Value $20.63
Growth  +4026.0%
Annual growth 3.3%

487-2 1x1 Bricks with Numbers

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 44
Availability Retired
487-2 LEGO 1x1 Bricks with Numbers
Retail $0.50
Value $58.16
Growth  +11532.0%
Annual growth 5.4%

488 1x1 Bricks with Letters

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 44
Availability Retired
488 LEGO 1x1 Bricks with Letters
Retail $0.50
Value $108.93
Growth  +21686.0%
Annual growth 5.8%

470 1x1, 1x2, 2x2, 2x3, 2x4 Plates

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 39
Availability Retired
470 LEGO 1x1, 1x2, 2x2, 2x3, 2x4 Plates
Retail $0.50
Value $50.00
Growth  +9900.0%
Annual growth 5.1%

481-5 Slopes Regular, Double, Angle, Valley and Corner Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 34
Availability Retired
481-5 LEGO Slopes Regular, Double, Angle, Valley and Corner Red
Retail $0.50
Value $15.75
Growth  +3050.0%
Annual growth 4.1%

481-6 Slopes Regular, Double, Angle, Valley and Corner Blue

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 34
Availability Retired
481-6 LEGO Slopes Regular, Double, Angle, Valley and Corner Blue
Retail $0.50
Value $23.94
Growth  +4688.0%
Annual growth 5.4%

420-4 2x2 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 33
Availability Retired
420-4 LEGO 2x2 Bricks
Retail $0.50
Value $20.15
Growth  +3930.0%
Annual growth 2.9%

422 1x1, 1x2, 1x4, 1x6, 1x8 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 28
Availability Retired
422 LEGO 1x1, 1x2, 1x4, 1x6, 1x8 Bricks
Retail $0.50
Value $20.96
Growth  +4092.0%
Annual growth 5.2%

423-3 Curved and Round Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 28
Availability Retired
423-3 LEGO Curved and Round Bricks
Retail $0.50
Value $30.55
Growth  +6010.0%
Annual growth 5.9%

419-3 2x3 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 25
Availability Retired
419-3 LEGO 2x3 Bricks
Retail $0.50
Value $17.58
Growth  +3416.0%
Annual growth 3.0%

480-6 Slopes and Slopes Double 2x4 Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 23
Availability Retired
480-6 LEGO Slopes and Slopes Double 2x4 Red
Retail $0.50
Value $25.00
Growth  +4900.0%
Annual growth 2.9%

480-7 Slopes and Sloped Double 2x4 Blue

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 23
Availability Retired
480-7 LEGO Slopes and Sloped Double 2x4 Blue
Retail $0.50
Value $25.39
Growth  +4978.0%
Annual growth 5.5%

482-3 Slopes and Slopes Double 2x2 Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 22
Availability Retired
482-3 LEGO Slopes and Slopes Double 2x2 Red
Retail $0.50

482-4 Slopes and Slopes Double 2x2 Blue

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 22
Availability Retired
482-4 LEGO Slopes and Slopes Double 2x2 Blue
Retail $0.50
Value $20.25
Growth  +3950.0%
Annual growth 5.1%

418-3 2x4 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 21
Availability Retired
418-3 LEGO 2x4 Bricks
Retail $0.50
Value $41.42
Growth  +8184.0%
Annual growth 6.4%

481-3 Slopes and Slopes Double 2x3 & 2x1 Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 21
Availability Retired
481-3 LEGO Slopes and Slopes Double 2x3 & 2x1 Red
Retail $0.50
Value $29.15
Growth  +5730.0%
Annual growth 5.8%

481-4 Slopes and Slopes Double 2x3 & 2x1 Blue

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 21
Availability Retired
481-4 LEGO Slopes and Slopes Double 2x3 & 2x1 Blue
Retail $0.50
Value $20.25
Growth  +3950.0%
Annual growth 5.1%

421-2 2 Eights 2 Sixes 2 Fours 8 Twos 6 Ones

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 20
Availability Retired
421-2 LEGO 2 Eights 2 Sixes 2 Fours 8 Twos 6 Ones
Retail $0.50

459 1x1x1 Windows Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 20
Availability Retired
459 LEGO 1x1x1 Windows Red or White
Retail $0.50

483-4 Angle Valley and Corner Slopes Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 20
Availability Retired
483-4 LEGO Angle Valley and Corner Slopes Red
Retail $0.50
Value $25.85
Growth  +5070.0%
Annual growth 5.6%

483-5 Angle Valley and Corner Slopes Blue

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 20
Availability Retired
483-5 LEGO Angle Valley and Corner Slopes Blue
Retail $0.50

My Collection

2x2 Bricks Reviews

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4.7
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About Classic Supplemental

Starting in the 1950s LEGO began individual parts sales, a practice that began with the Ferguson Tracktor in 1951. LEGO would supply dealers with wooden parts boxes and refill packs. These individual part sales would continue, at least in some markets, into the late 1950’s.

Supplemental consists of 140 sets that ran from 1960 to 1971. As of today, 890-2 Lockable Storage Box is the most valuable Supplemental set with an estimated new/factory sealed value of $435.
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