How well is the hole in the middle made?
It's a difficult thing to do. The glass has to be cut while it is still hot and the ends and sides persuaded to meet up neatly, to form a seal.
I got a bit interested in this a while back.
I got hold of one of those crackle jugs with intrinsic handles made in this way - I don't think mine can possibly be Moser, because where the cut bits of glass join up, it's all a bit rough and lumpy.
I haven't found a Moser one to see what that is like to compare it yet, though.
But how well it is done might help you to start looking for a certain quality and proficiency of maker, if it was not done in a mould, of course.
I also bought a vase that was on an internet auction a good while back, because it had a hole in the middle and looked interesting.
It turned out to be something very special. The hole in the middle of that is superb; all neat and tidy.
But I really don't think Laisner made your red vase.
This is a link to the thread about that vase. And I see I've not got actual photos posted there, but horrible links.
I'll see if I can fix that now. I have also put an image here, but there's information in the link.
https://www.glassmessages.com/index.php/topic,16996.msg100645.html#msg100645