Plate 10: two heads of old soldiers wearing helmets, both facing left and looking downwards, from "The principles of design" (I principii del disegno)

Stefano della Bella · ca. 1641

Plate 10: two heads of old soldiers wearing helmets, both facing left and looking downwards, from "The principles of design" (I principii del disegno)

Etching

The Metropolitan Museum of Art · CC0 1.0

Lindy Arts