The term Southern Netherlands refers to roughly the area of what is now Luxembourg, Belgium, Limburg and North Brabant between 1434 and 1795. In 1434 a single currency was introduced, and under the archdukes Albert and Isabella (1598-1621) a new monetary system was developed. However, after 1659 the mint orders started to decline. In the following times French gold and silver pieces made up a significant part of the circulating currency. It wasn’t until 1744 that the copper coinage was restructured. The silver coinage wasn’t restructured until 1755. The mints in Bruges and Antwerp closed and only the mint in Brussels stayed in commission.