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Hamann Elma electric calculating machine

1950-1960

Marchant "calculating twin" mechanical calculating machine

1945
Hamann Manus R manual calculating machine with automatic division, serial no. 42478, by DeTeWe Communications GmbH, Berlin, Germany, 1953-1955

Hamann Manus R manual calculating machine with automatic division

1953-1955
Dust cover, for Hamann Manus R manual calculating machine with automatic division, serial no. 42478, by DeTeWe Communications GmbH, Berlin, Germany, 1953-1955

Dust cover

1953-1955
Hamann Manus R manual calculating machine with automatic division, serial no. 42478, with dust cover, by DeTeWe Communications GmbH, Berlin, Germany, 1953-1955

Hamann Manus R manual calculating machine with automatic division

1953-1955