The rather dry technique of drawing in red chalk on light blue-grey paper suggest the work of the Bolognese painter Bartolomeo Cesi, who travelled to Rome in 1591, thought he may have visited the city before then. The partial copy from Sebastiano del Piombo (c. 1475-1547) on the verso does not seem to be an offset, as the complier of the entry from the nineteenth-century French sale catalogue clai