Mambrino's Helmet

Mambrino’s Helmet

golden helmet makes wearer invisible. [Span. Lit.: Don Quixote]
References in classic literature ?
He told us at random of the attack on the windmills and the flocks of sheep, of the night in the valley of the fulling-mills with their trip-hammers, of the inn and the muleteers, of the tossing of Sancho in the blanket, of the island that was given him to govern, and of all the merry pranks at the duke's and duchess's, of the liberation of the galley-slaves, of the capture of Mambrino's helmet, and of Sancho's invention of the enchanted Dulcinea, and whatever else there was wonderful and delightful in the most wonderful and delightful book in the world.