Plating errors and poorly annealed planchets tend to have a more "salt and pepper" look to them, not a gradational colour change...
I think one could replicate your loon error with application of heat as well... The plating is very thick on a loon, look down near the bottom of this page at Scissel's post.
https://goccf.com/t/128971&whichpage=11
Here is an example of a real plating error: https://goccf.com/t/215183
It is now in a PCGS holder: http://www.PCGS.com/cert/32839539
I think one could replicate your loon error with application of heat as well... The plating is very thick on a loon, look down near the bottom of this page at Scissel's post.
https://goccf.com/t/128971&whichpage=11
Here is an example of a real plating error: https://goccf.com/t/215183
It is now in a PCGS holder: http://www.PCGS.com/cert/32839539
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Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US
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