Signed to base:"Kosta, LH 1832" and still bears the original factory label. Czech / Bohemian glass: Borske Sklo, Chribska, Crystalex, Franz Welz, Harrachov / Harrach, Hermanova, Kralik, Libochovice, Loetz, Moser, Mstisov, Prachen, Rosice, Rudolfova, Sklo Union, Skrdlovice / Beranek, Stolzle, & Zelezny Brod Sklo (ZBS).
