Pen and brown ink, brush with brown wash, roughly 17 x 7 inches (42 x 18 cm); in the collection of the Getty Museum, which has both a zoomable and downloadable version of the image.
It is the second, warmer version of the image that I’ve used above. Not having see the original, I don’t know which is more accurate (museums are not always accurate in the posting of images of work in their collections), so I’ve simply gone with the version I like better.
This is another in a wonderful series of drawings by 16th century artist Frederico Zuccaro of his elder brother Taddeo drawing from ancient statues in Rome. This was common practice in the way that artists trained, and continues to this day in those art schools and ateliers that hew to the classic or academic training the preceded the advent of modernist doctrine.