The predecessor to Transformers Bumblejumper. According the Transformerland.com:

Bumblejumper’s mold was originally part of Takara’s 1983 Microman: Microchange line as MC04 Mini CAR Robo 02: Mazda 1500XG in three colors: yellow, red, blue . Unlike Diaclone, the Mini CAR robo were actually meant to resemble toy vehicles rather than real vehicles. Takara elected to style Bumper after their popular non-transforming Choro-Q/Penny Racers toy cars, including Bumper’s head plate being intended to represent the slot that would hold a “penny” or other coin as a counterweight. Bumblejumper was designed by Koujin Ohno. The US Patent titled Reversibly transformable toy block assembly (aka Transformers G1 Bumblejumper) was filed on March 24, 1982 (U.S. Patent No. US4578046 A).

Mint condition box authenticated and confirmed by AFA to contain new/unused toy and associated contents. Very rare piece and an important part of Transformers history.

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Encapsulated by AFA 85+q, #18681926