While browsing the samuraishokai website, I noticed this katana with hamon diferent from the rest (looks kind of like oil quenched, correct me if I'm wrong) and it was made during Showa period. https://www.samuraishokai.jp/sword/19163.html Do you think it's a Showato or Genaito? If it was Showato and not made in the traditional way, will it still get a "Torokusho" 登録証 and be allowed for sale on the website as nihonto? "Only traditionally made Nihonto can be licensed, i.e. swords made in Japan from Tamahagane 玉鋼 (and Shinto swords that are inscribed "Motte Namban-Tesu 以南蠻鐵" ["made using steel from the southern barbarians"]). This means in effect that it has to be either an antique, or made by a contemporary, licensed smith. Mass produced WWII swords (so called Showato昭和刀) and foreign made swords are not eligible for Torokusho." http://www.jssus.org/nkp/japanese_sword_laws.html