Czech glass Zipper vase (1920-30's) - Made by A-A

Here is a great 7" vase with a mirror-like finish and multicolored marbled confetti. The pattern appears to be pulled up through a mold then raked with a tool to create a marbled of "zipper" effect. The vase is then spun in a mold to create a very geometric shape and then a flash coloring is applied (probably when the glass is cooled). The vase is finished by grinding the rim smooth (it looks different than the other leading suspects).

A-A
This vase is an Anomaly... it is heavy for its size and has a high pitch "ping" when tapped. I'm categorizing this piece as A-A (Anomaly A) and try to match it by variations of shape and decor to a known company. Remember there are more "unknown companies" than "known" ones.