Unokubi Style TANTO, Kawamorita Hiroshige saku October 1865 signed, Bakumatsu era

川守田廣重作,慶應元年十月日.

It was likely made in the late Edo period, around the end of the shogunate.
The Tsuba has gold inlay on the sides.
The Habaki is wobbly.

Signature : Kawamorita Hiroshige saku / October 1865
Nagasa : 293mm (11.54 in.) 
Sori : 1mm (0.04 in.) 
Total length : 430mm (16.93 in.) 
Motohaba : 29.2mm (1.15 in.) 
Sakihaba : 21.6mm (0.85 in.) 
Motokasane : 5.7mm (0.22 in.) 
Sakikasane : 5mm (0.20 in.) 
Blade Weight : 267g
Total Weight : 476g