https://www.cnn.com/style/article/leonardo-da-vinci-bear-sketch/index.html
https://www.cnn.com/style/article/leonardo-da-vinci-bear-sketch/index.html
WWW.CNN.COM
'Small but magnificent': Tiny Leonardo da Vinci sketch fetches over $12M
Measuring less than 8 square inches, the artwork is one of only eight Leonardo drawings left in private hands.