hi
yes it is signed but the tang was in poor condition, here are the makers details..
Naminohira Yukichika was 61st head of the Saka-no-ue Naminohira branch of the Taniyama Naminohira school of Satsuma. The 57th generation Yasumasa begat three sons who each formed three branch families known by the locality of their locations where they settled. Thus, Yasukuni, the eldest formed the main branch as 58th Head (Honke), Yasumasa, the son of the above formed the Hori branch as 58th Head, and the third son, Yasusumi, formed the Saka-no-ue branch as the the 58th Head (Chaku-ke). Thus, Yukichika was his great-grandson.
Yukichika died in Bunsei 3(1820)