A mis-aligned Obv. Die. The Obv. die was loose, or moved during striking, and the coins it then struck showed a mis-aligned obv. die strike. That's the reeding that the die shaft picked up when it struck the collar (reeded on the inside) edge due to the misalignment. Hope this helps....
"double on the reeding" - not sure what you mean. There is the normal edge reeding, and the reeding from the Die shaft that made contact with the inside of the dime collar (reeded), inside the obv. rim. Is that what you mean ?
@Fred Weinberg is reffering to a collar clash if that helps you. https://www.error-ref.com/collar-clash/
As stated above, not that common, but also, not that collectable...There are enough of them around so that there are more of 'em than there are error collectors or interested folks who are. Interesting yes......
You liked it enough to post it. May not be popular or valuable but it's a keeper. Look closely and you can see the rim error caused Rosie to be a bit off center also, in my opinion. Thanks for sharing it. Good luck.
