Mintmark is not in the correct place to be die 3, and the doubling is not in the same direction. Judging by the way it "cuts into" the design, I'm inclined to say MD.
I cleaned up these photo's with ACDsee. I think it may be a ddo after all. Doubling on the U in trust and all the notching and points on every word.
IMO it is still flat and shelf-like, and seems to affect the mintmark as well which would point to MD.