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History
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Rasmus Malling-Hansen, detail from a painting by Malthe Engelsted's painting L'Hombre (1887).
Rasmus Malling-Hansen, detail from a painting by Malthe Engelsted's painting L'Hombre (1887).
The 1870 Hansen Writing Ball model.
The 1870 Hansen Writing Ball model.
The 1878 model of the writing ball.
The 1878 model of the writing ball.
Rasmus Malling-Hansen in 1887.
Rasmus Malling-Hansen in 1887.
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Model from 1870
Model from 1870
Model from 1874
Model from 1874
Model from 1878
Model from 1878
Hansen Writing Ball in Technische Sammlungen Dresden
Hansen Writing Ball in Technische Sammlungen Dresden