1904-O Quarter On Cracked Planchet

I was thinking that it must have had some level of displacement/springiness from the strike to create that wear pattern. I am outta ideas as to how else it could have occurred. I don't think there was too much displacement though, but on a coin this well worn I think it highlights it more than would be otherwise seen.

Thanks for the rotation correction too! My tablet was giving me issues.

Here's where it gets funny for me:

An offset certainly explains the wear - obverse being (if laid flat) higher toward the bottom and the corresponding areas of the reverse higher on the other side of the crack. Both faces would have to offset, to have a high side. But that creates a rim offset - obviously - which isn't seen here. OK, fine, it wore down in circulation even with the rest.

But if the offset parts of the rim wore to the much grater extent necessary here - consider, the "lower" areas on each face next to the crack barely wore at all - how does the thickness of the rim not change?

And where's the offset? The wear says it's plainly still there. The high sides are still high - the image is shadowing in the right areas to prove that.

Something just doesn't add up here and I can't decide what that is.