1964 Proof Set Accented Hair Kennedy Half Dollar DDO Doubled Die Obverse US Mint. You will receive (1) 1964 Accented Hair Proof Set with a DDO Accented Hair Kennedy Half Dollar. This set comes with the Original Envelope and the Original Certificate of Authenticity from the US Mint. We have included close-up photos of the strong DDO Double Die Obverse Kennedy Half Dollar. You will receive the exact proof set and coins that you see pictured. You will receive the following (5) coins… 1964 Accented Hair Kennedy Half Dollar Proof 90% Silver (DDO) 1964 Washington Quarter Proof 90% Silver 1964 Roosevelt Dime Proof 90% Silver 1964 Jefferson Nickel Proof 1964 Lincoln Memorial Penny Cent Proof (RED). This allows our customers to take a closer look at each and every coin to decide if the quality meets their standards. Get images that make Supersized seem small. Showcase your items with Auctiva’s. Track Page Views With.