Hackney gardeners dig up hoard of American gold coins | News Buried hoards are discovered every so often, but their Anglo-Saxon, Viking or Roman owners were themselves interred long ago. Whoever hid the 80 coins from the 19th and early 20th centuries may be alive. Why they chose the garden of a residential block in Hackney is a mystery.
I suppose one has to figure in the FDR move which removed "gold" from the American system and required American citizens to turn all the gold coin they had in their possession into account. There have been "hoards" (much smaller of course) found in America as well, buried by people who couldn't spend the coins, but were sure they would come back into usage post-depression, post-Roosevelt. This is one of the many reasons the "Double Eagles" are so rare today, sadly a great many were simply melted down and stored as bullion in Fort Knox when it opened up.