The circle represents the time we discuss in this section
The beginning of the Soshu style
A new sword style called Soshu Den emerged after the Mongolian invasion of the latter part of the Kamakura period. Kamakura area became prosperous under the rule of the Hojo (北条). Many swords smiths moved to Kamakura. Those people are Kunituna (国綱 )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) ——- O-Kissaki (large-Kissaki 大切先) and Chu-Kissaki (medium kissaki 中切先). Tip of Hi ends lower (see below illustration). Hamaguri– Ha was eliminated, instead, it became a thinner body. The original length was approximately 3 feet or so but the majority of them were shortened to 2 feet and 3 or 4 inches in a later time. The shortened sword is called O-Suriage(大磨上).
Hamon——————–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 main body and Boshi has the same type of Hamon. At the top of Kissaki, turn back a little or Yakizume. You may also see O-maru (large round), Ko-maru (small round), Kaen (flame like) or Nie-kuzure. See “Chapter 12 Middle Kamakura period: Tanto” 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 Since Masamune lived in a beach town, Kamakura, his hamon style was inspired by ocean waves. Therefore, his hamon sometimes looks like ocean waves.