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A paediatric galvanic pendant made by
Richardson. The central section reads "Magneto galvanic battery
childs size" on one side, and on the other "Patented in the US
Feb'ry 3rd 1880". The small current known to be created by
juxtaposed metals was thought to be therapeutic and spawned a host
of quackery devices based on this theory of "Galvanism" in the late
19th and early 20th century. |
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