unrelated in most ways, but similar decoration on this sugar/finger bowl, which I'd thought was likely to be from the area you're suggesting, and from the early years of the C20.
You can see the frit sparkling more on the pic of the inside, and as one of the four red beads is missing, they appear to sit within a small depression of the bowl - if you have all of your beads you're lucky.
This sort of green with enamelled dot decoration is typical of production from that period and place, BUT it's also not a million miles from some of the more recent Italian and Czechoslovakian decorated pieces, although not sure if those incorporate frit.
Hope you don't object to me adding the bowl.
Can't see you ever finding even a close match for a stopper, so guess cork it is - and probably just a stylized sort of leaf, but attractive