Seki Zenjo Chikanori  - Kaei 1848. Kikuchi Toyosaburo. First signed, Chikanori (Nori = CHI), Modifying later to Nori (SOKU "Law"). 
Seki Zenjo school line.  An Hitachi master from Murakura, his learning was heavily influenced by grandfather, Godai Megawa Murakansaburo last of the Bandotaro Bokuden - and also neighbor, KawamuraToyosaburo. 

Tempo Ju-ichi, 1840, he studied with Taikei Naotane when Naotane was making swords and teaching at Kashu-jo castle in the service of the Mito at their Han district. 

He followed Naotane on his own to Edo in pursuit of knowledge. He later took his leave to return and make swords for the Mito. He made Yamato Den Suguha, Gunome-Midare Ba, Gunome and Notareba. 
Chikanori died in the fifth year of Ansei, 1858. The second Chikanori worked from Keio to the Meiji. 

Breath-taking gift from one Daimyo to another Daimyo, it is the highest quality. Made in 1855.
An Elegant Sugata and harmony of balance in the powerful Yakiba and Jigane.
Fine Ko-Itame Hada with Masa that is nearly Muji in appearance. 
Yakiba is a stately Hiro-Sugu Ko-Midare Ko-Notare Ba of leaning, deep-falling Ashi. There is a great complexity of Striating Sunagashi through Ko-Gunome Ko-Choji Midare that dresses the Habuchi. As complex and fine as any Koto.
Boshi is Sugu Komaru. 
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63 Years later, this Chikanori was mounted in Silver Taisho Koshirae - Three Mon Menuki, Takeda, Asano Hawk-feathers Koshirae

Tokubetsu Hozon NBTHK appraisal papers and Tanobei Sayagaki.