Long awaited for - The Czech glass decor heavy swirls zigzags on cobalt ground vase

I could use a lot of adjectives that start with S: striking, stunning, substantial, superb, or spectacular, for this piece of Czech interwar glass if your taste runs in the period's over the top innovative category. It is a vase or jar made with several layers of glass, clear-cobalt-multi-clear, which I usually find in the decorative glass from this period that I consider made by A. Ruckl.

I have done a study of the shapes in this glass decor and found several that correspond to other Ruckl decors, identified by me, but nobody else. This fact makes it a potential but not an accepted attribution by the Czech glass collector community.

That is fine with me. I knew when I started this project that I did not have the background that would automatically give me a respected status. If I was able to advance our knowledge to some extent, by finding groups of decorative glass that were produced by the same company, that is still an accomplishment.

This piece is six inches high and six inches at the widest point, not marked, weight is about one pound and a half. The multi colored applied glass decor is truly vivid and practically harsh in its contrast of primary colors. The different yellow tones, the oranges, the reds, on the dark blue, pop. There are signs that the swirls were tooled with a comb to achieve the zig zag effects. As we have seen on other Czech glass swirl decor items.

The last image shows a row of other pieces, with some similarities from my collection, either part of the shape or the fabrication,