Authentic 1966 transition error silver quarter or not...???

Original post on reddit...
"Possible discovery coin, 1966 Washington quarter transitional silver error"
https://www.reddit.com/r/coins/comments/n1puzt/possible_discovery_coin_1966_washington_quarter/
My instinct initially says mushy and not authentic...what do you all think?!
OP posted that they have sent it to our host for authentication...
https://www.reddit.com/r/coins/comments/n46jo9/update_1966_washington_silver_error/
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It doesn’t look genuine to me. Or as if it’s being held properly.😉
And why would a 1966 be “transitional?
Mark Feld* of Heritage Auctions*Unless otherwise noted, my posts here represent my personal opinions.
Looks very mushy and fake. It may be real 90% silver, but I don’t think it came from the US mint.
Details look mushy and fake to me too. I would call it a counterfeit.
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Looks very mushy.
Paper money eventually returns to its intrinsic value. Zero. Voltaire. Ebay coinbowlllc
Looks fake, he's holding it incorrectly, and his hands are nasty.
My prediction; he will never update that thread or it will be updated with a barrage of dislike for the TPG he sent it to.
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Never a slave to one plastic brand will I ever be.
Definitely looks completely fake to me as well. And I don’t think we will ever find out either.
The very first thing this guy needs to learn is how to handle a coin. Then he should wash his hands.
If it was a 1965 I would say there is a chance. 1966 though, no way.
It looks plated to me.
A lot of '66 quarters have a mushy appearance because poorly aligned dies that barely kissed the planchets were used until they were heavily worn.
If it's silver it is probably counterfeit since there's no way that a real '66 silver quarter could have acquired so much wear.
1966 is not outside the realm of possibility for a silver quarter, as TPG's have certified a 1967 and 1968-S quarter in 90% silver.
The OP coin does not look genuine, however. It looks mushy, and the reverse die rotation may be a red flag in this situation. Die rotation does occur in the series as a legitimate mint error, but is also often associated with counterfeit coins.
As I recall, they struck 1964 quarters into 1965, so a 1966 off metal error is only a one year spread.
But I still don't like that particular coin.
That video is not conducive to proper coin evaluation. However, what I could see, seemed either poorly struck or worn. I remain undecided... One would hope we will hear the results. Cheers, RickO