The 1958-D Franklin Half Dollar is one of the most common coins in the series. Examples come well struck and there tens thousands of examples that grade MS65 or lower. In MS66 condition they are also plentiful and several thousand examples still exist in this grade. In MS67 they are much more difficult to find, especially with the Full bell designation. However, serious collectors should not have issues buying one at a significant premium. Examples grading higher than MS67 are very rare.