Charming Red Riding Hood mechanical bank. cast iron mechanical bank featuring the scene of Little Red Riding Hood and the Wolf disguised as Grandma. Key features of this mechanical bank include: Characters: Little Red Riding Hood, Grandma (with the Wolf disguised), and the Wolf's paw and face appearing from behind Grandma. Mechanism: When a coin is placed in a slot on the pillow and a lever is moved, the coin drops, the Wolf emerges, and Little Red Riding Hood's head moves back in