vintage Working Mattel V-RROOM! Booster Engine, a toy accessory from the 1960s designed to attach to a bicycle or tricycle. It was created to simulate the sound of a motorcycle engine.
The toy works without batteries.
It was released in 1963 and 1964 as a standalone unit that could be attached to a bike.
The levers on the front are used to create different engine sounds, such as idling, revving, and roaring. This machine still works even though the majority of the lever is broken off. It still makes all 3 sounds just as did in 1964. Could use a good cleaning. But still can be super cool fun.

Bx349

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