Standing Youth Holding a Club (recto); Temptation of Adam and Eve (verso)

Domenico Veneziano · 1440–60 · Brush and gray wash, highlighted with brush and white gouache, on faded blue paper (recto); fragment of the Temptation of Adam and Eve in pen and brown ink, over black chalk, on blue paper that has not faded (verso)

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