Yeah shelf doubling. No actual premium but it does add interest, which folks will.sometimes pay for...
Can't have a DDO on the date, the date wasn't part of the die when it was created. could be MD or RPD. I can't tell which from the image.
Possible repunched date, but I can't tell from the pictures. I'll check my Snow book tonight to see if that's a possibility. With a spread like that, strike doubling would tend to be visible elsewhere, too, although there aren't any other design elements close to the date.
I don't see any repunched dates in Snow that match the subject coin, so I'm going to say machine doubling.