Arithmometer
»Tim Mod. 1 Unitas«, 1907
Serial no. 229 and 0679,
German stepped drum calculating machine in original mahogany case. Early
model by Ludwig Spitz, Berlin, with original brass dealer's label "Oscar
Müller, New York". Rarity!
Estimate: € 1,800/2,500
US$ 2,450/3,400
Reserve: € 1,450/US$ 1,960
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