Venus at the Forge of Vulcan (recto); Sketches with Two Putti (verso)

Sebastiano Conca · ca. 1716–18 · Pen with black-brown and lighter brown ink, brush and brown wash, highlighted with white gouache, over black chalk, on paper washed light brown (recto); pen and medium-brown ink, on unprepared buff paper (verso)

From the collection of The Metropolitan Museum of Art. Free to download, adapt and use — no permission needed.