¶ 177 Leave a comment on item 177 2 友成 Looks like Tomonari. This would be a real treasure. Further notes (see Comments for full researcher’s details): many Koto sword references checked, but unable to locate this Tomonari signature. A check of Juyo Token references found no Tomonari blades with this specific length being granted Juyo rank as of 1999. The researcher believes this signature is worthy of further study / investigation.