Don't know anything about the signature, but the design looked awfully familiar, so I dragged some books out.
Couldn't find the exact vase, but the style reminds me very much of examples I've seen of cut Czech glass. My first thought was that it could be Moser, didn't find anything there, but I did find that this style of rim in combination with cut lines was used at Podebrady in designs by Josef Pravec.
Of course that might not mean much - other factories might have had similar styles in use, but perhaps it could be a direction to look into.
Astrid