
David Teniers the Younger (1610-1690), Old Man in his Study, Pinacoteca, Vatican Museums, Vatican State |

Mughal School, Portrait of Mir Mosavvir in old age, by Mir Sayyud’ali, 1565-1570, Gouache on paper, Musee des Arts Asiatiques-Guimet, Paris, France |

The grinding lathe for optical lenses in philosopher Baruch Spinoza's (1632-1677) house in Rijnsberg near Leiden, The Netherlands. Research philosopher Spinoza from the Netherlands polished optical lenses in his youth |

Anna Dorthea Therbusch (1721-1782), Self-portrait 1780, oil on canvas, Nationalgalerie, Staatlich Muzeen du Berlin, Berlin, Germany |

Jacopo Chimenti (1554-1640), Study for a portrait of Leo X (reg. 1513-21) (Giovanni de Medicus (1475-1521), Black chalk and white highlights on paper, Louvre, Paris, France |