2000 D Dime - REV Struck Through Late-Stage Die Cap? Maybe?

Hello all. I found a strange dime while roll hunting. As you can see in the pics, the edges all the way around the REV are completely illegible, and the corners are rounded off. At first I though it was just PMD. But as I looked more closely, most of the details on the REV appear to be very weakly struck, and somewhat muddy around the edges. The OBV also seems to be more lightly struck, and the edges of the lettering seems to be smashed down or irregular as well. Could it be that the REV die was capped, and kept on striking more and more dimes until most of the cap coin's metal had gradually flowed to the edge of the die, leaving the middle partially cleared? Maybe I am dreaming, but I'd like to hear your thoughts.