Damaged machine made.
If you look for/wish for "pontils" - you'll find them where they don't exist. Recommend you focus on the entire marble and the glass instead of glass imperfections.
By my observation - ~80% 0f those folks think all of their marbles are UV reactive, when the reality is that 98% of them are just reflecting the UV light. They don't know the difference. A lot of them have gone UV crazy.