Very beautiful katana, mumei, Tadatsuna school 1688-1781, in its original condition, representative of Osaka-shinto work Shinogi-zukuri blade, iori-mune back, long and thin ubu nakago type ha agari kurijiri 1 mekugi-ana, chu-kissaki, kasane 6.8 mm, nagasa 68.4 cm, 32 mm tori-zori, moto-haba 29.2 mm saki- haba 19.2 mm, the boshi is notare-komi The jigane is mokume-itame hada, the hamon starts in sugu-yakidashi, it is nie deki with zones of nioi, nice alternation choji-midare and suguha, nioiguchi bright enough broad, very interesting with long hashi and lots of activity No flaws on the blade: 720 g. We checked the sword signature. There is no guarantee of its authenticity, as it does not have certification (origami NBTHK or NTHK - certification paper). In order to ensure the identity of the manufacturer, we must present the sword to one of the major Japanese associations (NBTHK or NTHK). These associations will judge the sword and publish appropriate documents (origami) attesting to the authenticity of the sword and/or its historical importance. The sale, purchase and possession of weapons are subject to national laws and regulations. Please make sure that you know the laws and regulations of your country BEFORE bidding. The sale of weapons to people under the age of 18 is prohibited. By placing an offer, you declare that you are at least 18 years of age or older and that you have verified that you are authorised to legally purchase such articles in your country.