swirlsrus Posted October 23, 2011 Report Share Posted October 23, 2011 I have been buying some shooters advertised as "mint". Some ( and I notice this in a lot of marbles) there is a crease, like a narrow slash on the marble. Is this common? What causes it? Does it mean it is nm rather than mint?Or even worse? Bob Link to comment Share on other sites More sharing options...
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