I think she means in the lettering , if you look at the 1st S in states and enlarge the pic you can see what looks like doubling in the top and bottom of the letters . It's not a doubled die , but looks like some type of Die fatigue or MD . I'm sure @Jim M would know .
Looks like a good nickel to me, sorry I was thinking the same about the S in States. The glare will sometimes make it look as if you have a Doubled Die which may be happening to you. Perhaps if you were more specific as to the anomaly we could be of more help
I see what your talking about RZage and it looks like machine doubling on the lower portion of the coin. I also see it on the Monticello far right at the top of the building, just north of the FS initials. I think lighting is an issue on these pictures in regards to the lower letters.