Title-page to 'Varie Figur? & Prob?', 1645, Etching; first state of two, Sheet: 3 11/16 ? 2 11/16 in. (9.3 ? 6.9 cm), Prints, After Leonardo da Vinci (Italian, Vinci 1452?1519 Amboise), Title-page to 'Varie Figur? & Prob?' , with bust of a middle-age