Ginevra de' Benci was a painting done by the Human Leonardo da Vinci in the late 15th century in Europe on Earth. The painting depicted a female aristocrat from Florence, Italy.
The painting was also found among the relics in Kathryn Janeway's da Vinci holodeck program. (VOY: "Scientific Method")
This painting was auctioned off on the It's A Wrap! sale and auction on eBay. 
The reproduction was applied to a wooden backing with a lacquer to give the painting an oil paint look.