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Lever watch in case

Lever watch in case

1800-1870
Case, for calculating machine, Germany, 1880-1884

Case, for calculating machine, Germany, 1880-1884

1880-1884
Watch, Wunderwerk I System

Watch, Wunderwerk I System

1805-1815
Mechanism for Thomas de Colmar type calculating machine by A. Burkhardt, Glashütte, Saxony, Germany

Mechanism for Thomas de Colmar type calculating machine by A. Burkhardt

1880-1884
Calculating machine, Thomas de Colmar type in wooden case with lid, A. Burkhardt und Cie, Glashütte, Saxony, Germany

Calculating machine

1880-1884