Otsuki School
A large brass bakumatsu tsuba
Otsuki School, late 19th century
Of rounded rectangular form with raised rim, one side copper patinated and inlaid in iroe takazogan with five butterflies, signed Kongosai Gassan.
8.9cm (3½in).
FOOTNOTES
鐔　蝶　銘「金剛斎　月山」　19世紀後期

Kingosai Gassan (1815-1875) is mentioned in Haynes, Index as a student of Otsuki Mitsuoki and Kawarabashi Hideoki.