The circle represents the time we are discussing in this section
Beginning of the Soshu style
After the Mongolian invasion, which was the latter part of the Kamakura period, a new style of the swords started to emerge. Kamakura area became prosperous under the rule of the Hojo(北条). Many swords smiths moved to Kamakura. They are Kunituna and his group from Yamashiro area and Fukuoka Ichimonji Sukezane (福岡一文字助真), Kunimune (国宗) from Bizen area. They are the origin of Soshu Den ( school 相州). A star swordsmith, Goro-Nyudo-Masamune (五郎入道正宗) appeared during this time.
Shape (Sugata 姿)——-long Kissaki (O-kissaki 大切先) and medium Kissaki (Chu–Gissaki 中切先). Top of Hi ends lower. Hamaguri- ha was eliminated (became thinner). The original length was 3 feet or so but mostly shortened later time to 2 feet and 3 or 4 inches. This is called O-Suriage(大磨上)
Hamon——————–You see narrow Hamon and wide Hamon.
Narrow Hamon ——-Suguha (straight) mixed with Ko-Choji (small clove) and Ko-Gumome (continuous half-circle like). Small Nie base. (left drawing below)
Wide Hamon———–Notare (wavy) midare, O-gunome. Nie base. Ashi-Iri (short line goes inward, the right drawing below). Inazuma (lightning-like line), Kinsuji (a gold line like) appears on a tempered line. But Inazuma and Kinsuji require trained eyes to detect. It is hard to notice the Inazuma, Kinsuji, etc. for beginners.
Boshi —————The same type of Hamon from the lower part continues into Boshi area then turn back a little or Yakizume. You may also see O-maru (large round), Ko-maru (small round), Kaen (flame like) and Nie-kuzure. Refer 13|Tanto ( 短刀) Middle Kamakura Period for Yakizume and Kaen.
Jihada or Jitetsu (between Shinogi and Tempered line)–—– Strong Ji-Nie (地沸), that is a sand-like small dots appears on Ji (between tempered line and Mune). Yubashiri (cluster of Ji-Nie), Kinsuji (lined Nie looks like a golden line), Inazuma (lightning-like irregular line) and Chikei (similar to Kinsuji appears on Ji-Hada).
Late Kamakura Period Soshu School Sword Smiths
From Bizen———–Fukuoka Ichimonji Sukezane (福岡一文字助真) Kunimune (国宗 ) From Yamashiro ———————————-Toroku- Sakon- Kunituna (藤六左近国綱)
Those above three are the beginning of Kamakura swordsmiths. Later, Tosaburo-Yukimitu and his son, famous Goro-Nyudo-Masamune appeared.
Masamune Juttetsu (Main Soshu Style swordsmiths other than above)
From Yamashiro (山城)—— Rai Kunitsugu (来国次), Hasebe Kunishige (長谷部国重) From Ettshu (越中) province ———————Gou- no-Yoshihiro (郷義弘) Norishige (則重) From Mino (美濃) province ——————————————–Kaneuji (兼氏) Kinjyu (金重) From Chikuzen (筑前) province ————————————————–Samoji (左文字)
Goro-Nyudo-Masamune(正宗) Sano Museum Catalogue (佐野美術館図録) Permission granted *Because Masamune lived in Kamakura that is a beach town, his Hamon style was inspired by an ocean wave. Therefore his Hamon sometimes looks like wave design.