I never saw these before.....
I agree that these are Welz. The shape is quite distinctive and one of several shapes in the "family" of shapes.
This decor is also found on several other Welz shapes, several of which I believe to be markers for Welz production.
Attached are images of a group in the same decor, an image of some other examples from the shape family by Welz, and a shape in my collection documented in Welz production literature. Although not seen in the group image, the shape of your vase is one I have seen in two other décors identified as being Welz production.
Great pair... I love pairs......
Would it be OK if I copied your pics to use on my website?
Thanks, Craig