I recently purchased a 1963 mint set. The Franklin-d has slight doubling over the g in "In God We Trust", The E in "Liberty" is doubled. I have encountered another issue with the Franklin-P. On the obverse 1963 is doubled and many of the letters in the phrase " In God We Trust" is doubled and "Liberty" is doubled too. I have not seen anything on the net or any type of book that has any info on the 1963-p,d, doubling. I just wanted to let you know that I have much of the same thing. If anyone can help me with a book title or literature, I would be grateful.