Building Cards - 1090 (9874-1) is a Technic LEGO set released in 1992 with 5 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Technic sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 5 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1992 (34 years ago — may be retired)
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Catalog scale
5 parts listed · 5 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~9 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
No estimate on BrickID yet
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Parts in this set
5 parts · updating…
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Activity Booklet - Parts Tray Organizer Card - Set 10901090boc · ×1 · [No Color/Any Color] -
Activity Booklet A - Ferris Wheel - Set 10901090ba · ×1 · [No Color/Any Color] -
Activity Booklet B / C - Automatic Door / Washing Machine - Set 10901090bbc · ×1 · [No Color/Any Color] -
Activity Booklet D - Conveyer Belt - Set 10901090bd · ×1 · [No Color/Any Color] -
Activity Booklet E - Robot Arm - Set 10901090be · ×1 · [No Color/Any Color]