I was wondering what causes this to happen? I have seen it a few times and was hoping to know how this happens so when I see it next time I will know...
It's a 'woody'. Improperly mixed alloy make the coin look like it has a wood grain. I don't know if these have a premium, but someone that will know will be around soon.
Thank You, not sure about the premium either but it sounds neat to talk about. Thank you again for the info.
dont think theres really a premium but i save ones i find http://www.error-ref.com/improper-alloy-mix.html