Bi-Polar
      Electric Fan Motor by 
      »Thomas A. Edison«, c. 1898 
      Very early electric
      fan motor by the ingenious American inventor. Perfectly running with 1,5 -
      4,5 V battery. 
      Very important historical item! 
      Estimate:  3,000/4,000 
    US$ 4,200/5,600 
    Reserve:  2,500/US$ 3,500
     
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