Rare style KATAHIRA-ZUKURI 片平造 TANTO, Edo period mumei

This is an unusual style of blade.
The front side of the blade is Hirazukui and has a wide Hamon, while the back side is Shobuzukuri.

This style is often seen in Kaifuto from the Awa region.

Signature : Mumei (Unsigned)
Nagasa : 264mm (10.39 in.) 
Sori : 1mm (0.04 in.) 
Total length : 420mm (16.54 in.) 
Motohaba : 25.4mm (1.0 in.) 
Sakihaba : 19.9mm (0.78 in.) 
Motokasane : 5.2mm (0.20 in.) 
Sakikasane : 3.9mm (0.15 in.) 
Blade Weight : 203g
Total Weight : 359g