Smity: Since I see a lot of Ebay marbles described as "9.8 wet mint... with a few micro-nicks, light wear and two blowholes" - I suppose that "mint" doesn't mean anything anymore and some enterprising capitalists have invented the "Mint+" grade.
Soon to come will be:
> Super Mint
> Extra Minty
> Mint Extraordinary and Plenipotentiary
I shake my head ruefully at the sliding grading standards.
Alan