Dr. Leopold Eger's mineral dealership, variously called "Mineralien-Naturalien und Münz-Comptoir" ("Münz" referring to rare coins), "Naturalien- u. Lehrmittel Comptoir," "Dr. L. Eger's Mineralien-Comptoir," and simply "Dr. L. Eger," operated in Vienna, Austria from the following addresses (based on a study of dated labels by Fitz) :

(1873) Giselastr. 1
(1888) Breitegasse 9
(1890) Maysedergasse 3
(1893-1898) Maximilianstr. 11
(1899) Buchfeldgasse 4
(1903) Krugerstr. 8
(1910-1912) Breitegasse 9 [sic]
(1919) Theobaldgasse 5
(? date:) Lothringerstrasse 5
(? date:) Mariahilfer Hauptstrasse 18

Reference:
FITZ, O. (1993) Eine Sammlung Erzählt. Sonderhelt 1, Mitteilungen des Institutes für Bodenforschung und Baugeologie, Abteilung Baugeologie, Universität für Bodenkultur, Vienna, 80 pages.
The Mineralogical Record Biographical Archive

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Label size: 6.2x3.8 cm
Image © Sergey Vasiliev