I am fairly sure this part is from earlier than 1990. On the bottom are the characters "A" and "4". I checked Bricklink for yellow 2x10 parts but couldn't find anything. The 2x5 side with the cutout at the bottom is one level higher than the 2x4 back part.

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1 Answer 1


This is

Part # 870 : Vehicle Tractor Chassis Base 11 x 2 x 3


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