The only thing I can see that would be considered an error on your coin is Indirect Design Transfer. The weak 0 is common on LWC. No value added in that condition. IMO http://www.error-ref.com/progressive-indirect-design-transfer/
There are more than 40 RPM's on the 1946 S. See the link and have fun trying to figure out if this is one of them. http://www.varietyvista.com/02a LC RPMs Vol 1/RPMs 1946S.htm
I hope he doesn't mind. I don't have photos of all. But, I can put up a couple. Ghosts might be a good thread topic.
They all have the impression of the obverse head of Lincoln or Jefferson upside down on the reverse. Your coin has that impression also.
ok i see it now. i am new to the coin roll hunting, and ill have and expert look at it this week. i have another coin ill be posting that i beleive is a mint set penny shortly
Be sure to check out the link that @alurid put up above. I copied it here.http://www.error-ref.com/progressive-indirect-design-transfer/