Dr. D. J. Smith's Electro-Polarizer or Stomach Battery

Dr. D.J. Smith's Electro-Polarizer or Stomach Battery is a bimetal electro-therapeutic medical medallion, a silver horseshoe surrounding a copper frame in which is fitted a silver star-shaped centrepiece with copper plug in the middle.

Resources

 * Photos and information about Dr. Smith's Electro-Polarizer from the Rutherford B. Hayes Presidential Center holdings (rbhayes.pastperfect-online.com)