Russian Original Odhner 
Mod. 1
("Arithmometer"), 1886 (!)
One of the very few world-wide known 1st models of the Original Odhner No. 1 "Arithmometer". With original wooden case. 
A giant milestone in calculating history. 
Estimate: 3,000/5,000
US$ 4,200/7,000
Reserve: 2,000/US$ 2,800
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