Basic Building Set, 3+

Notable parts

• 1 printed part is only in this set: Brick 1 x 2 with LEGO Logo Open O White with no Outline Print (Blue).
• 4 parts appear in only a few other sets: Vehicle Base 4 x 16 for Steering Gear (Light Gray) — also in 333-3, 333-2 (all System); Brick 1 x 6 with 'TRANSPORT' White Print (Blue) ×2 — also in 333-3, 334-2, 333-2 (all System); Motor, Train, 4.5V 12 x 4 x 4 Type I with '4.5V' Print (Blue) — also in 102A Front-End Loader, 102 Imagination Set 2, 107-3; Winch 4 x 4 x 2 with Sloped Top with Black Drum [Complete Assembly] (Red) — also in 332 Tow Truck, 371-2, 372-2, 332-2.
• 2 parts are otherwise only found in System sets: Vehicle, Steering Gear 2 x 4 [Complete Assembly] (White) ×3; Vehicle Base 4 x 14 for Steering Gear (Light Gray) ×2.

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.