Hand-carved Seal Engraving Knife, Fukuzen, Bamboo Wrapped, Square Type, Blade Width 7mm + 3 Other Knives

This is a 7mm wide seal engraving knife for carving seal materials.
One is hand-forged, bamboo-wrapped, Fukuzen.
The other on the left has an engraving but it is unreadable.
3 more are included, for a total of 4 knives.
They have been used, but have no major scratches and are usable.
The box is dirty, but the knives themselves are clean.