crazy to see the premium slight toning brings on higher grades

take this coin below, for example, nothing crazy about the toning, and the last 3 sold averaged around 5500, but this one brought in a nice premium. crazy to see these mild toners even bringing in a premium these a days
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based solely on the provided images, I think you might want to reassess your opinion of what "slight toning" might be.
Prices such as that could lure me into the coin business....
My degree in metallurgical chemistry might help....
Cheers, RickO
@ricko
Do you think alot of the market acceptable toning is artificially toned?
@keets
The coin actually sold earlier at heriateg for 5800.thats a nice premium imo
https://legendauctions.hibid.com/lot/73044069/-1-1899-o-pcgs-ms67--cac/
The reverse die crack is nice.
@goldrealmoney79.... While it is difficult to define 'a lot', the general answer is, yes - I have seen a significant amount of tarnished coins deemed 'market acceptable' (by someone)... That I believe are AT....Cheers, RickO
An Ebay add keeps popping up on my phone showing what looks like the same coin for 7500.