Katakiriha-Zukuri 片切刃造 WAKIZASHI, Suken Horimono 素剣彫物, 相州廣 Sohuhiro signed

It's wide and the blade is very sharp on only one side, making it quite sharp.
This style is very rare and must have been a custom order.
This length is classified as Sunnobi-Tanto.

Signature : Soshu Hiro
Nagasa : 323mm (12.72 in.) 
Sori : 5mm (0.20 in.) 
Total length : 500mm (19.69 in.) 
Motohaba : 31mm (1.22 in.) 
Sakihaba : 22mm (0.87 in.) 
Motokasane : 6.5mm (0.26 in.) 
Sakikasane : 4mm (0.16 in.) 
Blade Weight : 321g
Total Weight : 547g