Tsuka decorated with tiger under bamboo and crab on leafs. Fuchikashira is signed "Masayuki", this signature can also be read as "Shozui". It is made of shakudo or shibuichi. I am sorry but I am not sure which one. Depending on the light It has a slight green colour that would point to shibuichi and a bit of chocolate brown that we would see on shakudo. Either way it is decorated with gold iroe and solid gold and silver inlay.
Menuki made of shakudo with gold iroe.
Tsukamaki is a bit loose.
A lot of samegawa is missing.
Length: 16 cn
Fuchi: 38 mm x 22 mm
Fuchi hole: 26 mm x 7 mm
Nakago hole: 8,6 cm
From top of the fuchi to center of mekugi hole: 19 mm