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BrickLink - Part 884b : LEGO Mindstorms RCX 1.0 without Power Jack (from Mindstorms 1.5 sets) - Complete Brick [Electric, Programmable] - BrickLink Reference Catalog
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LEGO part 884b - Yellow Mindstorms RCX 1.0 without Power Jack (from Mindstorms 1.5 sets) - Complete Brick at BrickScout
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