Blade and Mounting for a Dagger (Tantō)

Curved, single-edged Japanese dagger blade with a curved shape and a rounded tip. The blade has a flat, wide spine and a convex cutting edge. The surface shows a hamon, a tempered edge, and a complex pattern of tempered and untempered steel. The background is black. The blade runs vertically. The image shows a dagger mounting. The dagger has a traditional Japanese design by artist unknown as "Tantō".