Tsuba signed "Yoshinori". Yasuhara Yoshinori was from Bitchu province. His father was Yashuhara Tomoyoshi 1791-1847. We do not know exact time of Yoshinori life, however in 1864 he become retainer of Ikeda Daimyo of Matsuyama. In the past Yoshinori name was read Bijo. I couldn't find verified example of his signature to compare with. However this is not a well know makers name on the great quality item. So I feel rather confident that signature is genuine.
Made of shakudo with nanako ground. Crane made of inlaid shibuichi with gold and shakudo.
Size: 65 mm x 59 mm x 4 mm