ooh I think I've found it (would need confirmation though)
On page 297 of Harrach From Neuwelt to the Whole World
Bottom left hand picture (very small, hand-drawn and coloured picture)
There is a design of a vase that looks faaairrly similar to yours in shape (neck taller and slimmer and foot looks wider than yours) appears to be in clear glass with a green coloured neck, dragon and design on it so doesn't appear to show it as airtrap.
However, the dragon is similar and the design of the spaced out foliage is remarkably similar. I think it's a match to yours but will need to be checked out.
It says:
'Design for vase with painted decoration (dec no. F 3116) with the motif of a Chinese dragon, probably Josef Petricek, c. 1890 (FA)'
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'Design for a vase