I'm always curious about these particular pieces. The difference I note between yours and the pieces in the left hand most photo in that link (the photo from the Passau Museum) are that they appear to have 'swirls' of white in the yellow, rather than the white 'spatter' effect that yours has.
Also, a) Alfredo says that it is noted that other makers made this yellow and white swirl glass
b) I find it hard to get my head around the enamelling on lots of these pieces being Moser, when often people post a particularly beautifully enamelled piece of glass on this board and are told that the quality is nowhere near Moser. I'm not talking about the enamelling on your vase - I love the strawberries they are gorgeous - but just that others have posted some nice pieces and been told the quality is not good enough for Moser, yet I have seen quite a few of these yellow pieces and the enamelling hasn't been that great.
c) I thought Moser was mostly signed but perhaps not in the early days?
In summary I think some will be Moser (Alfredo says on the response to that posting that he has one vase that is signed) but others will be from other Czech makers. And working out which is which I should think would be very difficult.
m