This type of small knife is the shape of a traditional Japanese tool, originally made as a carpenter's tool. Later, it spread as a general-purpose tool for shaving wood and cutting fabric. It is grinded on one side only and is for right-handed users. The other side is grinded with a slight depression in the center to make the edge sharper. 
The carbon steel construction will rust if not oiled. It is believed to be 40~50 years old from the Showa period.
It is stamped “Trademark Ken Tsune”.
This type has no sheath.
Size Edge:2 1/4”  Overall 7 "
Will ship from Japan by DHL.Will ship combine.

This knife is factory sharpened. It can be sharpened with a regular European or American whetstone. Sharpen the right side at an angle and lay the left side flat on the whetstone.