Nope, don't need more. A little research after seeing the images more closely defends die #3 as you had originally suspected...through a chain of markers I generally use to identify that die, I found that the scratches near the date are identical to a photo on my site. Note the die scratches tot he left of the 1 and inside the 9 on the date photo in the first post here and compare them to this image of 1972P-1DO-003. They are the same.
