Posted 08/10/2015 1:14 pm
John is correct. Die scratches in that area. Another thing that some think are tails is the rolling lines that are left over from the striking of the coin. 
You can see on this image the rolling lines (on the stock material) do not go away with the striking of the coin.
The best way to tell is to look where the trail lines originate. If they are near the corners of a device at an angle, you are on the right tract.
Sometimes they even affect the shape of the devices:
Taking images are a bit tricky. Most of the time you have to angle the coin to get these to appear. (a straight on show may not show these easily) So tilting the coin will show minor ones, but the stronger ones are more desirable.
You can see on this image the rolling lines (on the stock material) do not go away with the striking of the coin.
The best way to tell is to look where the trail lines originate. If they are near the corners of a device at an angle, you are on the right tract.
Sometimes they even affect the shape of the devices:
Taking images are a bit tricky. Most of the time you have to angle the coin to get these to appear. (a straight on show may not show these easily) So tilting the coin will show minor ones, but the stronger ones are more desirable.
