A two-handed flamberge, German, circa 1580 A double-edged blade with undulating edges and a blunt point for striking. Notched in places on the upper third. An orb mark on one side with
Flamberge Sword: A 15th-Century Weapon with a Flaming Blade - Malevus
Casting a Bronze Dagger with a wavy blade - a symmetrical Kris or Flamberge knife (Serpentine blade) - YouTube