Just a couple observations. The coin in the first photo appears to have a repaired hole - I note a clear change in color with the plug being lighter than the coin itself. It shows that the dies were not properly aligned when the coin was struck. That could be handy for authentication. The plug must align.
In the last case the 7 is absolutely different. Yet there is a faint outline of the plug but no color difference.
There is also evidence of cleaning and retoning between the coin in 2005 and the 2017 appearance.
I think we are dealing with more than just differences in lighting here and suspicion of possible forgery is warranted.
In the last case the 7 is absolutely different. Yet there is a faint outline of the plug but no color difference.
There is also evidence of cleaning and retoning between the coin in 2005 and the 2017 appearance.
I think we are dealing with more than just differences in lighting here and suspicion of possible forgery is warranted.























