Japanese Letter Opener Samurai/ Ninja Miniature Historical Reproduction#04 Made with stainless steel, and sharpened just enough to cleanly cut through paper. Made in Japan, where the katana originated from!! Each letter opener comes with a kakedai (katana display stand), so one could display the elegance of the katana, only on a smaller scale. There are many different types and styles of katana, and there are just as many different designs of letter openers to choose from!