The legal framework surrounding the possession of such traditional swords can be complex, particularly in Japan. Japanese katanas with high collectible value often come with certificates, such as NBTHK certificates or NTHK certificates. At KatanaSwordArt, we collaborate with renowned Japanese "Token shops" (刀剣店) and swordsmiths (刀匠) to bring authentic katanas to our customers. Feel free to reach out for inquiries.