How much rotation does it take to make a coin a cool keeper?

I figure this Jefferson has about a 13dg rotation to it. Would this be average for a proof coin?
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My Original Song Written to my late wife-"Plus other original music by me"
https://youtube.com/playlist?list=PL8A11CC8CC6093D80
https://n1m.com/bobbysmith1
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It is strictly a matter of personal taste. I have no interest in such coins and actually consider the rotation to be a negative rather than a positive.
Maybe 90 but probably wouldn't pay anything extra for it.
EAC 6024
Less than 90 degrees will rarely interest me.
http://www.shieldnickels.net
They all annoy me. I prefer correct die alignment.
I would not be interested unless it were 180 degree rotation - virtually a medal strike. Cheers, RickO
Morgan's and P dollars would interest me.
I have some coins with a 360 degree rotation but none of the grading companies will recognize that error.
Thanks guys. I've had this jeff for at least 3 yrs and never even noticed it was off.
My Original Song Written to my late wife-"Plus other original music by me"
https://youtube.com/playlist?list=PL8A11CC8CC6093D80
https://n1m.com/bobbysmith1
I think it's a cool extra lil something if you didn't pay for it.
I once paid a premium for a major rotated die Peace $1 which I sold as it quickly bored me.
Rotated Peace dollars are quite rare in all rotations, and can be pricey depending on degree of rotation.
Depends on the series. Rotation is so common on large cents, for example, that if it isn't at least 45 degrees no one is going to care. For other series, significant rotation is far less common and therefore of more interest to specialists.
I have no idea how common rotation is on modern Jefferson nickel proofs. Does anyone know?
Not sure how common they are but I don't think they get much interest until it reaches about 20dg or more for a proof jeff.
My Original Song Written to my late wife-"Plus other original music by me"
https://youtube.com/playlist?list=PL8A11CC8CC6093D80
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Either way it's interesting.
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It has always been my understanding that within the Mint system a rotation of up to 15 degrees was considered close enough. This does not mean that they had the same tolerance on Proof coinage.
As far as collectors are concerned, I doubt if anybody cares about rotation less than 30 degrees, and for some people the threshold is 45 degrees or even 90. Doesn't mean you can't collect them, however.
I have some with the much scarcer 720 degree rotation.
My Adolph A. Weinman signature

Around 90 degrees would be the minimum for me to get semi-excited.
U.S. Type Set
There are buyers for everything abnormal. I sold this rotated proof nickel recently. I got good money for it:
https://www.ebay.com/itm/222746484420
@Overdate
I was once told by an old time collector that the 720 degree rotation was worth about twice as much premium as one with the 360 degree rotatation...........I kind of believed him
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For specialists in any given series, such as myself, almost any discernible rotation of the coinage dies, especially those not previously seen or documented, would be of interest. For years I have sought, studied, measured, and documented any and all examples of rotated dies within the half dime denomination, some with as little as 10°-15° of rotation. And for those who might scoff at such obsessive behavior, I can only state that it is just one more reason to continue to collect a series one loves.