Electrogalvanic amulet
Electrogalvanic amulet, Richardson's Magneto-Galvanic Battery (or possibly a fake?), disc with cross at centre and 14 small discs arranged in a circle around it, engraved on front of cross with two hearts radiating electric bolts, and on reverse side with 'PAT & RD US, GB, FRANCE, ITALY ETC.' made of zinc, brass, copper, iron and nickel, by A.M. Richardson & Co., New York, USA, 1880-1900
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Worn against the skin and in contact with sweat, amulets made up of a combination of metal alloys were believed to create a weak electrical charge, recharging the body's electrical supply. It was based on an ideal that electricity was responsible for healthy nerves and blood flow. Richardson's galvanic amluet was one of several on the UK and US markets that claimed to treat everything including low spirits, loss of appetite, back-ache, dizziness and flu.
Galvanic was a term used for the production of electricity from a chemical reaction.