I agree with Trev regarding the meaning of the first three marks. I've never seen the other two marks on a WMF piece, and I suspect they are the retailer's marks, the marks for the event, and/or owner's personal marks.
I can supply you with an image from the 1925/26 WMF Musterbuch (pattern book):
It appears on p. 117, among the Pokale (prize cups):
The piece does not appear in the 1906 WMF "Art Nouveau" catalog.
It seems unlikely you would ever be able to identify the designer of a WMF piece from this time period, when the factory seemed to be cranking out a vast array of items. I count 47 different "Pokale" illustrated in this one catalog, plus 59 different ornaments (
e.g., athletes, soldiers, animals, etc.) for the top. I don't start seeing named designers associated with patterns or pieces until after WWII, but then, I don't have much access to the German literature about the company. Perhaps someone who does can be more help along that line.
Diana