Pictures... Back: Looks like it goes through then follows the wing and stops on C. Front: Starts before lower part of bust and travels a little past the ribbon.
Scrap everything about the reverse I said earlier. There are two cracks on the back. One goes from the R (Pluribus) to C (America) following the wing. The other starts from the U (United) and crosses the bottom of the wing and seems to stop.
I'll try not to generalize too much here, but if you come across some pretty healthy die cracks and they seem to cruise underneath the devices that they encounter, is that a clear indication that it IS a die crack and not just a bad scratch? If it were a bad scratch you'd be able to see the line go up and over whatever letters or numbers as well, right?
If a coin is scratched (say you took a key, or sharp object, & ran it across the coin) it would dig "into" the coin, likely removing or rearranging the metal. On the other hand, a "die crack" is in the die, so when the coin is struck, metal is pushed up, into the crack in the die, leaving a "raised" ridge on the coin. I've found the easiest way to observe this difference is not to look straight on, but at an angle, with a light source at an angle also. The difference then becomes easy to recognize.
If it's so small that you need to take close-up pictures like that, chances are it carries no premium in the market. Some of those lines are die polish marks. They are interting to note, but collectors don't pay premums for them very often.
