Check the listing for details. 1969 S Kennedy Half Dollar Proof DDR-007 Doubled die reverse. Listed at 49.00 USD. 1969 S Kennedy Half Dollar Proof DDR-007 Doubled die reverse. This is the coin I discovered some ten years ago and had listed in the CONECA files at varityvista.com You can see my name listed in the picture from the file. This is a nice doubled die on a nice proof half dollar. My name is David Bowman and I am the first submitter/reporter of several new listings to the CONECA files at varietyvista.com, Wexler's Doubleddie.com and Ken Potters world variety registry across several denominations as well as a new listing for an rpm that is described as an inverted s over normal s. It is 1945 S/S wrpm-005. One can view the listing with pictures at doubleddie.com under the rpm files for Mercury dime. You can rest assured that you are receiving a properly attributed variety from me. Please see my other listings Satisfaction guaranteed Free shipping with tracking/ Free returns Coin pictured is coin you will receive