If you would like buy a real Katana with all the small print with the nomenclature, then you're in the best position. Carbon metal blade with Hamon made with clay, razor sharpening, engraving and hand carving. Katana will also be often known as dai or daitō among Western sword enthusiasts, https://handforged-katana-sword09517.wikienlightenment.com/6949641/a_review_of_authentic_katana_sword