Hi Christine,
I actually sent the vase to Angela, as I couldn't find my elf posy and felt she was better placed to make the comparison.
From her photographs, it's obvious that they are from different moulds. Very clearly so. The Bagley is 'wavier' - i.e. the wave peaks are higher, and there are more of them per line. There are 15 wave peaks on the Bagley, and only 9 on the Belgian vase. Also, there are only 15 waves on the Bagley, whereas there are at least 16 waves on the Belgian - they sort of peter out at the end so I wasn't sure whether there might be another faint wave there.
Also, the Bagley vase has three quite prominent mould marks, whereas the Belgian has none. But the Belgian piece was satinised. Would the acid treatment be enough to make the mould marks undetectable? My feeling was that the Belgian piece was very nicely made.
This answer probably needs to be appended to that original message, and also it might be worth opening a thread on Inwald and Walther designed pieces marked Made in Belgium.
Not just now though... For my last Uni unit, I wrote 20,000 words in 5 days and now I have to edit them before 31 Oct in the vague hope that they will become coherent, because at the moment they ain't! It's put me off writing for life, just about: now I'm thinking of taking up something staid and sensible as a hobby. Narcolepsy perhaps, which at least would be restful.