Marx 7" battery operated bulldozer with plastic body and metal under-body.  Clean battery compartment. 

It runs and moves, but one of the pins that holds the blade to the chassis is broken and the blade is loose.  When it runs, the blade lifts up and down but doesn't work 100%.   It could be fixed with a small metal pin, for example.

Please see photos for more details. Batteries not included.

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Thanks for looking!