Not a DDR but a RPM. Looks like RPM-002 to me: http://www.varietyvista.com/03 Buffalo Nickels/1938DRPM002.htm
Can you take a better picture of the mintmark without the glare? It does not look like the RPM to me - it looks like machine doubling. I hope I'm wrong for your sake, but I don't think the picture you provided is clear enough either way.