Disc music boxes made by F.G. Otto & Sons, Jersey City, NJ, 1898-early 1900s.

Vienna. 1850-1875. Brother of Anton Olbrich Sr., maker of cylinder movements in typical Austrian format. In cooperation with Anton Olbrich Sr. before 1860.

Vienna. 1821-1865. Maker of cylinder movements in typical Austrian format. In cooperation with Joseph Olbrich before 1860.

Vienna. Maker of musical movements in typical Austrian format mostly found in Austrian musical clocks, 1868-1892.

Prague, Josefov. Maker or distributor of musical movements of typical Austrian format mostly installed in clock bases, together with Johann Salisch ca. 1860.