Tooth is the natural gritty texture of the wrapper leaf which is what it could be. If you gently rub the spots, do the spots disappear? If they are just bumps and don't come off, then it's tooth. If it does rub off easily then it's just the cigar aging. If it doesn't come off very easily and leaves behind a distinct stain on the wrapper then you've got mold!
It's very hard to tell (try and rub it off as I describe above), but from the picture I'd guess it was just some rougher textured wrapper on some of them.