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The first series of 13 locomotives was built by the Sächsische Maschinenfabrik, previously Richard Hartmann, in Chemnitz.
For the hilly line of the Müglitztalbahn from Mügeln to Geising-Altenberg the Sächsische Maschinenfabrik in Chemnitz developed an eight-coupled locomotive which, it was envisaged, would handle this route better that the hitherto deployed Saxon Classes I K and IV K.