This wonderful rags to riches tale happened in Australia, where an anonymous buyer found this strange looking cup in 2013. Really digging the design, they nabbed it for $4 and then got to thinking that it might be worth more then they thought. They sent a picture to someone at Sotheby’s who suggested it might be a real 17th century Chinese “Libation Cup” carved from rhinoceros horn.

The original purchaser put it up for auction where it fetched over $75K. That’s insane.