Full length 'Kinai-Bori' or 'Echizen-Bori' carving on an Echizen katana. It appears to be inscribed with a name: "Sword of the Last Days." The last days were WWII when the Japanese were commanded to carry their swords on them during battle .
XXXXXXXXXXXXXX One example of a mace capable of penetrating armour is the flanged mace. What makes a flanged mace different from other maces is the flanges, protruding edges of metal that allow it to dent or penetrate even the thickest armour.