It's amazing what you can find looking through you loose change. Notice the extra copper filling in the 9. It's caused by a wearing die. I've seen coins with multiple of these errors all over the coin and thats how the coin got that way. It looks like a bead of copper just sitting there. It matches pefectly as far as color ,so I know it wasn't done after it left the mint. Now that I see the pic again, it looks like the 5 is doubled also.