Vienna. Austro-Hungarian Empire. (Now Austria)
Silberschmied / Silversmith
Known dates: Founded around 1880, then purchased by W.M.F. Württembergische MetallwarenFabrik in 1900. The factory continued production until 1914.
References: Senses Art Nouveau Address book 1, Address book 2 Vienna districts
Art Nouveau Silvered Alpaca beer beaker 
Basemark on the featured beer beaker. 