A Young Girl in Profile in Renaissance Dress. For centuries, people thought this painting was the work of a 19th century German artist imitating the renaissance style. Then, in 2009, a fingerprint was discovered on the upper left-hand corner of the painting that is believed to be Leonardo da Vinci's. If this really is one of his paintings - and it looks like it is - it will be the first new Da Vinci work discovered in a century. It amazes me when art and science collide like this.