Robert Fludd. "Robertus Fludd, alias de Fluctibus ...". Orig. copperplate engraving, J. T. de Bry. From: J. J. Boisard, 'Bibliotheca sive thesaurus virtutis et gloriae ...', Frankfurt am Main, Fritzer, 1630. A portrait with a coat of arms in oval frame. 13:10 cm.