What Type Of Error Is This Called?

I think the reverse of this dime is very similar to the reverse of the cent you posted.

The obverse of the cent shows the design rim (which is the edge of the obverse die) from about 8:00 to 1:00. The rest of the rim is finning.

The reverse of the cent shows a rim made up of finning. I think I see a faint hint of the design at the 3:00 position but the rest of the design rim is obscured by the grease.

I see the same effect on the dime. The reverse rim is from the finning. The design rim from the die is obscured by the grease. I think I see a hint of it in one of the photos at the 11:00 position. But the coin seems to have some toning making the softer detail harder to see.

The more I reread this post the more I am . I withdraw my opinion about it being a Magician's coin. I will wait to see what the pros say. Do we need Mike on this?
John1

I would agree with the majority, who've concluded that this is some type of post-strike damage. The reverse design appears to be flattened as well as partially removed. The appearance is unlike any "grease strike" I've come across. The reverse "rim" does not appear to be a fin and is too thin to be the design rim. The obverse face is warped. While this could conceivably be the result of Die Deterioration, I suspect it's another symptom of post-strike damage. The obverse also shows no evidence of the increased effective striking pressure that would ordinarily accompany a grease strike this extensive.

Thank you everyone for your input. Has certainly been educational.

Did we ever get a weight on this thing? I'm still leaning towards a lathe job but need the weight!

I finally got a scale that measures in tenths of grams. The dime weighs 2.47 grams. I guess that is almost full weight? Does that then support the magic coin theory or the grease theory?

Perhaps. It is wider than a regular dime and definitely thinner but weighs the same. Something must have flattened it but left the rim intact.

When I said vise job I felt the coin was sandwiched between a circular flat faced object at the reverse that was slightly smaller in diameter than the dime and a more forgiving surface on the obverse. The reverse object was pressed into the coin, flattening the devices , and causing the the edge to fin and spread . The obverse was somewhat preserved by the more forgiving surface it was against.