Scanned from an albumen circa 1875
Title on photograph "Roma. I giorini della Settimana, Mercurio. Mercoldi. Raffaelo, Vaticano"
A photograph of an engraving by Conte Carlo Lasinio (1759-1838) based on a painting by Raphael (1483-1520) which is located in the Vatican.
The engraving depicts Mercury holding his caduceus riding in a chariot drawn by a pair of cockerels.
Photographing artwork was common in that era as it allowed people who couldn't travel to the galleries or afford the engravings to see the artwork.
Photographer unknown.