Rare 1867 silver coin made for China trade sells for $4.75 million at Hong Kong auction; collection fetches nearly $32 million

A rare silver coin, crafted over 150 years ago, fetched an astonishing $4.758 million at a Hong Kong auction. This exceptional piece was part of the proposed Kwan Ping Trade Coinage aimed at solidifying trade currency standards in China. Hidden from public view since the mid-20th century, its myste…