Rare Revolutionary Engraving Print Period End Of 18th Century

Revolutionary engraving entitled "the mass fall: the electric spark of freedom will overthrow all the thrones of crowned brigands", identical plate kept at the Carnavalet and at the BnF. This engraving testifies to the progress made in the field of electricity, with the staging of a rotating vertical disk machine, called Ramsden. This machine became established in the 1780s and disappeared at the end of the 19th century.