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Carl Geyling Erben Kaiserwalzer . Stained glass window designed by Otto Hieser and executed by Carl Geyling's Erben in Vienna in for the Gewerbeausstellung Window is now located in the tavern Kaiserwalzer in Mariahilf on Esterhzygasse CarlGeylingErbenKaiserwalzer CarlGeylingErbenKaiserwalzer CarlGeylingErbenKaiserwalzer Gryffindor