Doubling on the Missions 2019 Quarter

I found two 2019 Missions quarters with some sort of doubling. They are very simular yet different. Can you please tell me what causes this and if there is possible value here.
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I found two 2019 Missions quarters with some sort of doubling. They are very simular yet different. Can you please tell me what causes this and if there is possible value here.
Comments
That looks quite interesting. I look forward to see what some of the experienced error guys say.
A full photo of this side and the other of your coin would be helpful.
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.
@arby96 .... Welcome aboard. It looks interesting, further pictures would help. Cheers, RickO
Can you do a pic of just the word “Mission” ?
Hoard the keys.
Yes I can do that
Thank you just want to see if there is any shifting in all the letters or just that one.
Hoard the keys.
Here you go Type2.


What about the M on the first photo?
Welcome back!
Looks like you have some fun finds to share.
The stronger one looks like a doubled die to me.
I think there is a chance the other one is too but a little harder to say for sure.
Can you get a better picture of it?
All I can see in this post is the “S” pic don’t see any other pic with a “M” now this is what you can do send it to one of them to get attributed and if it does it will receive a FS number or it may not. But in my eye it’s not really worth it because it just one letter and it will cost you one coin and a small fee. Here are the names. Good luck and let us know if you do send it in.
Hoard the keys.
That list from that book is ancient
The first photo is interesting
Usually with mechanical doubling on these incuse letters has only a slight spread
It looks more like die deterioration than anything else to me, but these singe squeeze hubbings are tricky and I have seen some things like this get attributed as minor DD's. I would suggest posting on the CONECA forum for more feedback.
Edited to add: after viewing the photo you posted just below of the M I will reverse my stance as that seems to show some splits on the serfs. You should be able to get this one attributed as a DDR.
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.
Taking a closer look at the M mabye just a Die Crack?

Yep, looks like a die crack.
That's what I was thinking, it didn't match up to the shift of the S.
Looks like the top of the N may show a little doubling on the stronger example.
M - I’ll just call it an anomaly
Looking at the close up pic of the 1st coin, there looks like there could be a split serif, but it looks like the S is thinner than normal. I can't see how that would occur during class IX doubling. Could the notch be an artifact of the lighting and shadows? I believe this is Mechanical doubling, but would change my mind if additional close ups confirm the split serif
As @coinbuf and others have said, this die was made from using the single squeeze process. Most Class IX doubling occurs near the center of the die. Further complicating things is the letters are incuse, which means they are raised on the Working die and incused on the working hub. So the shallowest part (the thin S) would be the first part pressed, then the hub would have to shift to form the rest of the letter. Don't know if this is significant, but thought I would throw it out there.
The following links have info on class IX doubling
https://www.error-ref.com/doubled-dies/
https://www.doubleddie.com/58222.html
BTW: I don't see any split serifs on the second coin
I'm not convinced it is a doubled die. Machine doubling does funky things with incuse lettering. That would also explain why the two examples you found are different.