The main difference between F-12 and VG-8 on these coins is the rim and skirt lines .
in both grades the figure of liberty and the eagles breast and head will be worn smooth with only the slightest detail remaining , the eye being the deepest should be visable and the stars and stripes should be able to be seen being protected by the rim and high points of the devices .
The reverses of both are very similar with the first coin showing just slightly more wear that the second .
I admit that part of my grade for the coins is based on the known weakness in strike for the coins .
Both coins based on the inherent weakness of these coins especially in the very early dates IMO makes both of these coins F-12.