Here is the 1935P-1DR-001. While taking pics, I noticed in my files that over the past year I have accumulated 1DR-001 for all three mints (P, D, & S) in 1935.
This is a tough one because of all the circulation wear. But if the markers match up, I'd say you got it. There is extra thickness in EPU on the reverse, best seen in the slight elongation of the dots. Jay, you may want to change the title of your thread, I expected to see 1DO-001 here but got 1DR-001 instead.
I tried. I couldn't figure out how. Look here: http://www.coppercoins.com/lincoln/diestate.php?date=1935&die_id=1935p1dr001&die_state=eds