Apparently during the 80 Years War, or the Dutch War of Independence, a fellow found it irksome to give one side or the other his money. To avoid such a travesity he stuffed his worldly wealth in a shoe and buried it behind the wall of the Town Hall in Rotterdam.
Archeologists, whilst poking around as they are want to do, discovered the shoe stuff with 477 silver coins all with dates corresponding to the 80 Years War. Read Dutch News International.
The 80 Years War was sparked by heavy taxation upon the Dutch in the "17 provinces" by the Habsburg ruler of Spain, Philip II. The war ground on for many decades eventually dragging almost every one in and around the provinces into the rather bloody fracas (the town of Breda exchanged hand at least 4 times).