That da Vinci is a painting I would have not picked up at a garage sale. It was just not my type of art. But what do I know about art, except what I like and don't like.
We had a constant string of artists from real artists to complete garbage wasters of inks.
One of my favorite artists was Orren Mixer. He did mostly a particular horse that an owner wanted painted. If someone gave him the down payment it might take 10 years before he got to it. He charged a minimum of 25K for a painting.
https://www.google.com/search?q=Orren+Mixer&client=firefox-b-1&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjr7NWC_efaAhVh6YMKHaOZDFAQsAQIJg&biw=1728&bih=809
He was a great guy, and I considered him a friend.