The 1969-D Kennedy Half Dollar was produced out of Clad and Silver content. The only Kennedy Half Dollars struck out of both these compositions are Half Dollars struck from 1965-1970. After 1970 all circulation strike coins were produced out of Clad only.
The 1969-D Kennedy Half Dollar is common in circulated grades but most examples have been pulled from circulation due to its silver content. The coins that survive in Uncirculated grades are also common up to Grade MS64. In MS65 they become a little difficult to find but still available in the thousands. In MS66 they scarcer with about 1,000 examples available. In MS67 they are very difficult to come by and less than 50 are known in this condition with none being finer.