Finest known Cheerios Prototype Dollar coming up for auction later this month

An online friend is selling some Cheerios Prototype Dollars through Stack's. The first one, an NGC-69, will appear in this sale:
I have no financial interest in the coin. I simply have always had an interest in the Prototype coin itself, ever since I noticed the change in the tail feathers design back in January of 2000.
TD
Numismatist. 50 year member ANA. Winner of four ANA Heath Literary Awards; three Wayte and Olga Raymond Literary Awards; Numismatist of the Year Award 2009, and Lifetime Achievement Award 2020. Winner numerous NLG Literary Awards.
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There are four more a few days later, starting here:
https://auctions.stacksbowers.com/lots/view/3-1KQEL0/2000-p-sacagawea-cheerios-dollar-fs-902-boldly-detailed-tail-feathers-ms-67-pcgs-sculptor-engraver-of-the-us-mint-ret-thomas
There are two more, including an actual circulated piece (come on, if you got a dollar in the box of cereal your Mom bought wouldn't you spend it?) a few days after that, plus a Wounded Eagle in the lot before them.
https://auctions.stacksbowers.com/lots/view/3-1KVZB1/2000-p-sacagawea-cheerios-dollar-fs-902-boldly-detailed-tail-feathers-au-58-details-cleaned-anacs
TD