I was wondering how they have come to their attributions, but I guess it only takes one picture for others to follow - the vase on the VS auction site was dated 2004, so a lot of people will have seen it. It is exactly the same photograph as that used in DK ART DECO Judith Miller btw. I don't believe it was labelled and I don't think any of the pieces I have linked to above are labelled in anyway.
Been interesting searching though, having managed to find such similar decors and different colourways. I'm on the fence for the moment

m