Shaking out your couch cushions for spare change used to be the move when you wanted to scrounge up some quick cash, but if you are sitting on top of a solid coin collection, you could be harboring ...

The most expensive coin collection ever assembled numbers 15,000 coins—it’s so large and historically thorough that it’s being sold in a series of 15 auctions set to spread out over three years.

Most rare coins experts expect these to become the most valuable modern coins ever sold, Stack's Bowers Galleries claimed. The mission, STS-93, most prominently helped deploy the Chandra X-Ray ...