TCGrader's AI has graded 14 copies of Reshiram & Charizard-GX (Unbroken Bonds), averaging 8.1 overall. Only 21% scored 9 or higher, so genuinely mint copies of this card are scarce.
TCGrader Population Report
AI grade distribution across every copy of Reshiram & Charizard-GX graded on TCGrader