A vast coin collection, much of which was buried underground for more than 50 years, is expected to fetch in excess of $100 million at auction, according to experts. The Traveller Collection, thought to be the most expensive coin collection to ever come to auction,

Assembled in the 1930s before being buried for 50 years, the consignor of the so-called Traveller Collection has chosen to remain nameless.

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