Kohlmessergasse 8, Wien, and Chaux de Fonds and Budapest
Detail from the Imperial-Royal Austrian Exhibition held at Earl's Court, London in 1906:

27 (Queen’s Palace.) JULIUS BELLAK.
Gold und Silberwaren Fabrik. (Manufacturers of Gold and Silver Ware, Watches and Jewellery).
Vienna, I/1, Kohlmessergasse 8, Chaux de Fonds, Budapest.
Makers of Watches, Jewels, Chains, Rings, Jewellery in Gold Silver, and Platinum in any quality and style.
Source: Imperial-Royal Austrian Exhibition : 1906 - 1906
Trev.