Yelmo tipo chichak, turco otomano, con inscripciones coránicas - Siglo XVIII
Google Image Result for http://img0.etsystatic.com/011/1/6664294/il_570xN.424149092_7g7l.jpg
ArtStation - character, Eddie Liu
During long sea journeys, and battles, armor, chainmail, and helmets, did corrode. However, there were numerous methodes to remove the rust again, for instance by soaking the items in hot vinegar, and then polishing them with linseed oil.
Viking Sketch , Adrian Wilkins on ArtStation at https://www.artstation.com/artwork/viking-sketch-69828854-ee95-4804-b959-b4edb08bf7d2
Medieval Armor Leather Padded High Collar by MorganasCollection, $89.99