Stack's Bowers Galleries on Instagram: "One of the rarest coins in American history realized $2.52 million when it crossed the auction block @stacksbowers ✨ Only two examples are known. The other has been locked away in an institutional collection for over a century. This newly discovered piece had been tucked away in an old cabinet in the Netherlands, still connected to Boston’s Quincy family, before experts authenticated it as the long lost second specimen. Struck in 1652 at the Boston Mint by