Thinking of price value? we do have the same problem about the price value of an error kennedys, mine is a RAISED SUNKEN DIE CRATERS VARIETY. my partner said to me one time, let me have that kennedy half dollar i will teach you how much the value of it.I ask her what she gonna do for it. She said I will buy some candy for it. (Grrrr. urgh.!)
My 2 cents Kennedy half ether you like them or hate them. I have been collecting them since Feb of 1964.but worth is hard to apply most 64-P&D won't grade above MS-63-64 as they were struck so fast in1964. but if you can get a 1964 P or D that grades MS-66/67 it can be a big money coin. http://www.pcgs.com/PRICES/PriceGuideDetail.aspx?MS=1&PR=1&SP=1&c=125&title=Kennedy+Half+Dollar
I went through a big box of proof 1964 halves that I had laying around and I found 4 of the transitional pieces with the broken rays on the reverse but the I was intact on the obverse and the hair looked like the normal hair.