Is Shanks's Gryphon not included in the Grade Swords list, although it is able to withstand Whitebeard's bisento? - Quora

Shanks' Gryphon Sword originally belonged to Gol D. Roger - One Piece

How powerful is the Gryphon sword in One Piece? - Quora

Is Shanks's Gryphon not included in the Grade Swords list

Is Shanks's Gryphon not included in the Grade Swords list

Can WhiteBeard be called a Swordsmen? : r/OnePiece

What grade would a blackened sword be? : r/OnePiece

Is Shanks's Gryphon not included in the Grade Swords list

How powerful is the Gryphon sword in One Piece? - Quora

What are the highest grade swords in One Piece? - Quora

What are the highest grade swords in One Piece? - Quora

One Piece: Is Shanks' Sword Gryphon A Supreme Grade?