Whats going on here?

This is a 2023 Roosevelt dime. Can any one give me advise as to what's going on with the OF on the reverse please?

 

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Flat and shelf-like, mechanical/machine doubling. This happens when the coin shifts in the collar when struck.

I do not see any erosion of the letters, just the shift, so not die deterioration.

 

Yes. I advise you to go to the following website so you can learn the differences between true Doubled Die varieties and worthless doubling. It's very easy to understand.

https://doubleddie.com/144801.html

 

I read the article. i understand better now. Thank you.