That's really cool. Maybe someone can say or sure if it is. It's easy to forget they were actually driving those things instead of cars, you know? Cool find.
Looks like a piece poured in a foundry. Too ornate to be handcrafted. Don't know what its use was though. If it was a buggey step it was a shin buster.
idk..if it was a step why does it have a spot on each side where a pin was to allow it to move up and down like a pedal ..woudlnt it just be mounted onto the vehicle? unless it folded down somehow...just thoughts from looking at it..hell of a paperweight