I believe this is MD. The frame and grilles of the windows are raised on the hub, those are what I'd expect to be doubled on a genuine doubled die, like the listed DC DDRs as well as the Harper's Ferry and Homestead DDRs. The glass panes of the windows are raised on the die, so any secondary contact of the die to the coin ( Machine Doubling) would duplicate them. Just like what we see here.
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