Not sure about the age of this (Meiji?), but it seems to be an utsushi of a nodachi tsuba from the Futarasan shrine.  Suitable as decoration, or for mounting, if you find a sword of the suitable size    I attach pictures of the original at Futarasan.   Measurements: 10.6 x 10.2 x 0.65 cm at mimi., 0.35 at seppa dai   SOLD thank you!