The 1959-D Franklin Half Dollar is not a scarce date by any means. It's mintage is just over 13 million which is a little higher than average for the series. However, for some reason examples In MS65 are hard to find. With a few thousands examples confirmed. In MS66 condition it is really scarce with about 200 examples known. In MS67 condition it is almost non-existent with the exception of one lone example that has been graded PCGS MS67. No others have graded MS67 or higher, making it an extremely scarce coin in MS67 condition and higher.