I associate vaseline glass with small decorative items, but this is 29cm high. It flourescent under UV although not very bright. Just in case it is really belting out radiation I keep it in the conservatory to kill the greenfly. Unfortunately they seem to be getting bigger. I'm not worried.
Seriously, does anyone recognise the mould ? I seem to remember seeing an illustration of a similar German vase, although I can't remember the maker.
The flower like trumpet shape causes me to think Art Nouveau. Is that the right period ?