I cannot see any DDO in photos. this may help you. http://www.varietyvista.com/12 Kennedy Halves/DDOs 1974-D.htm
Why did yoy choose the Paper Money forum to ask your question? I believe I see damage around the rim of your coin. Probably coin wrapper crimping machine damage.
Yeah, it's damaged. That's a big gash across his head, too, it looks like someone tried to scalp him. Also, that's not a DDO; not off those pictures, anyway.