2007 D Jefferson Dollar - What Sort Of Doubling Is This?

It is not DDD. (Die-Deterioration-Doubling) That might be a DDR. Which Prez is it?

Well I see nothing listed for this year/design/mint. But the only thing that comes to mind is that the die may have been polished a bit and the machine touched the deeper part of these devices and removed a bot of metal from that area. (removed metal on a die will leave an area raised) I see no evidence of hub doubling. No spread, nothing enlarged on the designs devices. Just a little field disturbance. But on these beings they are single squeezed die process dies, a doubled die would be more in the central areas of the die, and not on the outside devices of the die.
http://www.varietyvista.com/15%20Go...20dollar.htm
More in this area of the coin.