$4 thrift shop cup turns out to be rare rhino-horn treasure worth $75,640

A shopper discovered a unique Chinese libation cup at a thrift shop in Sydney, Australia. They bought the cup for A$4 despite its significant chip. After assessing the item, a Sotheby's specialist appraised it at A$20,000 to A$30,000. The item was later auctioned for A$75,640, significantly exceedin