Definitely a DDR. Check the date on the obverse. It looks a lot like this one & it is a DDO also. Awesome find! http://varietyvista.com/1948PDDR003 half.htm
In the CONECA Listings there are 7 of the 8 listings that have doubling on EPU...can you use the descriptions and markers to identify which die you might have? http://www.varietyvista.com/Variety Master Listings/franklin doubled dies 1948-1956.htm Larry Nienaber
There also is a site called Franklin Lovers that has pictures of most of the die varieties. I go there frequently because there are die marker pictures. I can't vouch for accuracy (I haven't had them all in hand), but then again, I have no reason to doubt the accuracy either.