Hi Vicky - my opinion is that I think you are going to struggle with an id for this one. A lot of the Stuart pieces that were decorated with enamels and gilding - from the late '20s and on into the '30s - were mould blown pieces rather than hand blown - I'd suggest that if you look under the foot you'll find a machine finish rather than a depression, which would have indicated it had been hand finished.
Not really my area, but believe there was a lot of inexpensive glass decorated in this bright and cheerful style between the wars - Stuart alone are credited with creating over 600 designs, though my opinion is that the quality of this, whilst attractive, falls below their standard.
This one may well be from eastern Europe, but as I say I think it's going to remain anonymous, unfortunately - but I've been wrong many times, so fingers crossed.
Nice piece of usable glass by the way. Assuming you don't have navvies hands, then I think we can estimate an approximate size of your comport, but actual sizes are always useful when provided.

P.S. just realized I hadn't look at the underside of the foot picture - can't really see, but is there a ground/polished depression?