MS-66RB, fantastic coin! Considering how NGC has been recently, however, they might have called it AU Details, Altered Surfaces.
I agree with MS66RB. A stunning coin no matter what NGC chose for the numerical grade. Is there a star?
I got the very same looking coin back from NGC...unc. altered surfaces...NGC # 2081240-001...I love the coin! I'll go with MS65RB but if you submit it , try PCGS.
UNC Details- AT is my guess for the slab It looks very cool though and I’d say a 64/65 grade would be fair.