Thanks, Dan. Maybe I just need to show up there at the hotel with it and trade it for a few stay. The Cafe is confusing to me. I can't tell if it was a specific original establishment, or if the Cafe was a group/area of cafes back then. Your boss' wife having any knowledge of an old Cafe Klagenfurt in Wien is my best chance for now.
RE: I Almost Donated A ~22 OUNCE Sterling Silver Antique From Austria/Late 1800's I Salvaged From The Curbs