Check out this one. Seller says MS 67/68 DMPL, but it looks like a proof with accented hair to me. http://www.coinbug.com/1964-accented-hair-kennedy-half-dollar-dmpl-viewitem_i5400?img=2#hImage
I can't tell by looking at the provided photo, I certainly wouldn't spend that kind of money unless there's a good return policy from the seller. This is the type of coin that I would probably want professionally graded or at the very least certified.