J.G.Y. S.R. aide-de-camp of Mr. Lafayette.
Drawn by Fouquet, engraved by Chretien, inventor of the physionotrace, Cloître St Honoré in Paris. Very nice proof slightly yellowed, some stains. Frame.
Diameter : 6 cm.
Chretien was the inventor in 1784 of the physionotrace, by which the shadow of the profile to be represented was projected on a transparent paper, then shifted and reduced by a process close to the
Pantograph, and finally engraved with etching on a copper plate in miniature format.
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