Pontil mark ?

[Mojo]

Found some clearie's

Bubbles and maybe a pontil mark ?

Dont see this mutch on the marbles i have 

[Chad G.]

All "machine made " "no handmades"  "no pontils" appears to be asmade cold roll crease. Air bubbles are common in clearies. I believe every manufacturer known made clearies & I know of no way to differentiate one manufacturer from another.

[wvrons]

There are billions and billions of transparent colored clearies of all sizes from all companies. Some have bubbles or seedy lesser quality glass. Very very few can be placed with any certain marble company or time frame. All the above is why they have almost zero collector value.  When you produce 250 per minute twenty four hours per day, five or seven days a week. Do the math one million marbles comes about many times per year. Even for one single company alone. How many marbles companies do we know of in the USA or the World ?