LEGO 503
Basic Building Set

LEGO 503 Basic Building Set box image
Set number
503
Theme
Basic
Pieces
39 pcs
Year
1987
Used & parts
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“Basic Building Set” is LEGO® “Basic” theme set number 503. Released in 1987, it has 39 pieces. With Re:GO you can automatically work out what percentage of this set you can build from the LEGO parts you already own, along with the missing parts and an estimated cost. Use the links below to compare prices on Amazon, Rakuten, Yahoo! Shopping, Mercari and Yahoo! Auctions, and find the best deal on new, used, or individual parts.

Part breakdown 19 types

Color split (most first)
Red×13
Yellow×10
Blue×8
Black×6
Trans-Clear×2
Main parts (most used first)
3004 Brick 1 x 2
Red · ×4
3641 Tyre 15 x 6 Offset Tread Small
Black · ×4
3004 Brick 1 x 2
Yellow · ×3
3004 Brick 1 x 2
Blue · ×3
3034 Plate 2 x 8
Red · ×3
3003 Brick 2 x 2
Red · ×2
3003 Brick 2 x 2
Yellow · ×2
3010 Brick 1 x 4
Yellow · ×2
3020 Plate 2 x 4
Red · ×2
3021 Plate 2 x 3
Blue · ×2
3039 Slope 45° 2 x 2
Yellow · ×2
3039 Slope 45° 2 x 2
Trans-Clear · ×2
3137c01 Brick Special 2 x 2 [Red Wheels for Single Tyre]
Black · ×2
3001 Brick 2 x 4
Yellow · ×1
3001 Brick 2 x 4
Red · ×1
3001 Brick 2 x 4
Blue · ×1
3003 Brick 2 x 2
Blue · ×1
3022 Plate 2 x 2
Blue · ×1
3022 Plate 2 x 2
Red · ×1

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