Hello,
I need some advice on verifying the authenticity of
Buffalo nickel's mintmarks. Please comment on the following 4 questions:
1) Do all 'S' mintmarks for all years of
Buffalo nickels have to be stamped at the exact same location on the reverse side in order to be considered genuine?
2) Do all of these 'S' mintmarks have to be the exact same physical size for all years that the
Buffalo nickels were made in order to be considered authentic?
3) Does the following close-up of the 'S' mintmark of this attached
1917-S
Buffalo nickel appear to be genuine and not counterfeit?

4) Please recommend a good website that has closeup pictures of authentic mintmarks for
US coins.
Thanks