Looking into purchasing this sword, but I'm thrown off by this inscription on the blade. The katana comes with NTHK papers, the tang is signed, and it looks to be traditionally-forged. However, from what I've seen blade inscriptions are usually a red flag.
Tang is signed ""武州住藤原正永" (Bushu no Jyu Fujiwara no Masanaga) which fits the name of a Musashi smith of the Keian period. (source: https://nihontoclub.com/view/smiths/meisearch?page=97&order=title&sort=asc).Just want to see what the blade says and make sure I'm not getting burned if I buy it.
Thank you in advance!