all of the 'outline' that you see is Longacre' doubling.
That is: a doubling that is commonly seen on coins designed by Longacre.
It occurred as a result of the punching of the die. The exact causes are too long to explain right here, but it is normal and not unusual on
Seated coinage, or
Indian Head cents.
It is NOT a Doubled Die, nor
Strike Doubling.
However, it is unusual to see it on coins with that much wear.