Galvanic brooch, cased, brooch illistrates a flying cupid emanating discharge, by Pall Mall Electric Association, English, 1890-1920. Detail shot of brooch, black background.

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Galvanic brooch, cased, brooch illistrates a flying cupid emanating discharge, by Pall Mall Electric Association, English, 1890-1920. Detail shot of brooch, black background. Science Museum, London. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.