A trove of around 15,000 rare gold and silver coins hidden from Nazis and worth somewhere in the neighborhood of $100 million ...

A $100 million coin collection hidden underground for 50 years is heading to auction in a historic multi-year sale.

In the 1800s, private mints produced tokens that could be exchanged for goods during the Gold Rush. As federal currency stabilized, these tokens’ worth dissolved. Read Next: 5 Rare Coins That ...

Also among the collection is a unique and special tribute coin presented to emergency service workers during the G7 Summit in ...