Help with distressed inscription please

[Mark]

i have a signed and dated  katana that has a very distressed mei.  My guess is Shinsinto maybe Gassan school.  i think i see the maker is Sadakiyo but don't find a smith by that name that would match. The date is written like grass script and i cant make out the period,

 

help with the mei and date greatly appreciated

 

thanks

mark

 

[Ray Singer]

Mark,  the sword has a mei of Kenryushi Sadaharu. You can see the entry below from Markus Sesko:

SADAHARU (貞晴), Keiō (慶応, 1865-1868), Settsu – “Naniwa-jū Mizuguchi Kenryūshi Sadaharu saku” (浪華住 水口剣龍子貞晴作), “Settsu Ikutama ni oite Kenryūshi Sadaharu kore o tsukuru” (於摂津生玉剣龍子 貞晴造之), “Naniwa-jū Kenryūshi Sadaharu saku” (浪花住剣龍子貞晴作), student of Gassan Sadayoshi (月山貞吉), his gō were Kenryūshi (剣龍子) and Kensaishi (剣斎子), we know blades from the Keiō to the Meiji era (明治, 1868-1912), mostly a magnificent sugata with a wide mihaba and an ō-kissaki, dense ko-itame or masame which tends to muji, suguha-hotsure, notare, gunome, he works in the style of his master Sadayoshi, he also added a koku´in seal in the form of the character “chū” (忠・忠) , chū-saku

[Nobody]

於津國生玉剣竜子貞晴造之 – At Tsu no kuni (= Settsu province) Ikutama, Kenryushi Sadaharu made this.

慶應四歳辰八月日 – Keio 4^th year Tatsu (1868), 8^th month

[Mark]

Ray and Moriyama - big thanks!!   Must be a mental block, i know Sadaharu, had a sword by him before.  I think with the damage my eye thought it saw Kiyo instread of Haru and then i got stuck on thet. I thought it looked Gassan school.  Makes sense now, thanks again