If you go back to loetz.com and to the Kralik section take a look on page 4 and at the bottom of the page to illustration 37. I think this is the same form vase as yours, the PMC stands for the Passau museum catalogue which i have open in front of me and the finish of the vase you have is similar to the vases shown on page 154 of PMC band IV in the Kralik section. The décor is called Opalglas and dates from 1900 and the form is classic Art Nouveau and although your vase is a different colour way to those illustrated i am sure it is of the same line of décor, i have been to the Passau museum and seen these vases they are very beautiful and very intense they certainly are a match to the better known Loetz silberiris décor of the period. I have several Kralik vases in different décors in my collection and in my opinion yours is definitely Kralik and a very very nice vase. Kralik is a very underrated glass house and is often passed off as Loetz at fairs and by dealers who should know better, it should be recognised as the fine period art glass it is. Hope this helps, Cheers Pwayne.