IMHO The coin probably
had some surface corrosion and/or adhesions
which have since been substantially removed.
There now appears to be a significant amount of smoothing/tooling in the
obverse fields around the
bust and in the areas around the lettering. This
is where it seems the extra line in the Gamma has been produced.
I am confident that these share an
obverse die. I overlaid the images and
almost everything lines up. The places where there are minor differences
can be explained away with the above reasons. Take a look at the
K that
is behind the
bust, it is awkward and out of place, I expect you will find
signs of tooling/smoothing/etc. in this
area as well as around the
Γ. Note
also the apparent scratch marks above the
head and in other areas.
I am only going by the images supplied, and you may see things better in
hand. I
hope you don't mind me offering an honest opinion.
All the best,
Walter