Dime 1984 P - Need Experts' Attribution

Just an overused die. The lines coming from the middle toward the edges are called radial flow lines. The doubling seen behind Roosevelt's head is Die Deterioration Doubling. Nice die crack on the torch though.

Great images of the full coins. Note the second one is a little darker on one side than the other. I use a thin coin to put under the ramp to get the images full surface to make the whole coin the same lightness. It takes a little more time to get that right, but a great image does make a difference.

The reverse die is about a VLDS where the obverse die is a late MDS. (The small lines on the 4 area make it a later die state to me, but the rest of the die looks pretty good on the obverse.)

That is the common MD of the outside edge of the bust. I've always mentioned in my comments about the this "uusally" this is Machine Doubling. I did find an example on John Wexler's site that is a hub doubling. On it you can see the rounded hub doubling:

You coin has the machine damaged example. Note the flatness of the design on that area?
On the hub doubled example it is rounded.