Yes to SVDA, page 250 shows two vases made with the same techniques but without the red lines included in yours, so they are clear glass with gold. One vase is the same shape as yours but a bit larger at 32cm.
One of the vases in the book is dated 1949 and the vase with the same shape as yours is dated 1958 (model 12023), they are described as incrociato oro, design Flavio Poli. So very prestigious!
Gotta rush out now but will look for more info tonight.
John