Antique Stevens & Williams ? Pink Cased Zipper Glass Vase

I have done a lot of research on this vase and believe it is an antique Stevens & Williams Pink Cased Zipper Glass small vase. It has a really unique ruffled edge and intricate swirl patterns, with areas that are "pushed in" as shown in pictures, which I think is where the term cased comes in. I have not found any comps just like it, only similar patterns on other items like bowls or glass baskets, which makes me think I have identified it correctly. This is preloved and I think in excellent antique condition. Measurements are approximately 5" H x 4" W