I think this has some age, there is dirt embedded in the creases of the glass and seeds within the glass, the pontil base has been pushed up into the glass creating a domed effect, i cant feel or see any wear to the base.
The ring below the bowl looks like a clock cog wheel has been impressed into the glass.
It's 5 1/4 inches in height, 2 inches across the rim and 3 inches across the base.
Any help welcome regards Chris.