This silver dollar just sold for $1.2 million

The story goes that on Oct. 15, 1794, chief coiner Henry Voigt coined the silver dollars and delivered all the acceptable ones, 1,758 of them, to David Rittenhouse, director of the US Mint, according to the Smithsonian Museum of American History. He handed them out as gifts to dignitaries...

Only 140 of the 1794 so-called Flowing Hair silver dollars are thought to exist. (The coins depict a woman with long flowing hair)... The $1 coin that sold in Boston to an anonymous bidder was considered the fourth best specimen of the six mint 1794 silver dollars known to exist. The best specimen, called the Neil/Carter/Contursi 1794 Flowing Hair silver dollar, sold for nearly $7.9 million in May, setting a new record price for a coin.