It appears to be Austrian but I can't find any images of the head in a round "frame" like this one. They the frame around the head is usually either flower-like or with 5 corners.
The "W" near the 925 is also a mystery to me.
The first mark on the left has a capital "B"with a dot above it.
Any ideas?
Thanks, S
Here the entire cup
P1150737.jpg (1.0 MB)