I have a pres. Dollar Garfield there are a bunch of stars in a row then an empty space on edge letters.
Based on your photos, the normal edge lettering has been buffed off the edge of the coin, and the extra 'stars' are some type of damage from contact with another coin or something else. In the second photo, the copper core of the 'plain' area is dead center - if you look at normal Manganese dollars, you'll see that the copper core is not dead center on the edge - it's a bit higher or lower than centered. This is due to how the blanks are punched out.
