Like Larry said, there are several Double Die Obverses for the 1966 Kennedy half dollars. My dad had some spare time a few weeks ago and went to a local B&M shop to look through thier 40% silver junk (the owner lets us buy at spot value). Dad found 6 1966 Double profiles, here are a few pictures of one using a 1.3 Dino lite camera.
Last winter, my dad found a 1967 DDR-001 in the same box of junk silver for me and I think spot was going for around $6.15 per coin. That coin graded MS65 at PCGS and now resides in my registry set. :devil: http://www.pcgs.com/SetRegistry/alltimeset.aspx?s=43295