Coin is linked below, I am curious to see if members here think this slab monster toner that went for $400 is NT?AT? or MA? and why? https://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338461489&mpre=https://www.ebay.com/itm/1964-D-MS64-QA-Kennedy-Half-Dollar-50c-PCGS-Monster-Toned-See-Description-/173933371740?epid=170348291&hash=item287f3ca15c%3Ag%3A9mEAAOSwrI1dA927&nma=true&si=f3D3lMKPTMPXNCvgJufheD29L%252F8%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
The coin is AT in my eyes and deserves to be in a details grade holder IMO. No way would I pay that enormous premium for a coin with toning that questionable, even if it is in a problem free holder.
Or the PCGS Truview was taken soon after the AT job, and the slab photos are more recent and show that the artificial toning on the surfaces is not stable and is turning over time.