.01" oor One of the First Chrissy's I purchased. Vivid colours glossy smooth and pristine With Christensens, I don't think it's fair to call it less than Mint with either .01 or .02" oor as the majority of Christensen marbles aren't perfectly round. Anything greater than. 02 though I would take the grade down. If extreme, then it might be a football type.