A beautiful piece of glass.
It looks to me like the bottom was not broken ….. but made that way so as to be used as a “funnel” for whatever mixture was poured/placed in the top of it and the liquid portion would drip/flow through the “holes” in the inside partition separating the top half from the bottom half.
The “
holes” in the partition can be seen in the 1st photo.
It resembles a “flower” of an epergne vase, to wit:
