The Hamburg Mint is the oldest German mint. Most mintmarks are printed with a "J" and the country as a subordinate operation of the Department of Economy and Labor of the Hanseatic City of Hamburg. There are currently 55 permanent working employees. The Hamburgische Münze, both part of German coins (21 percent) and commemorative coins of Germany, and foreign coins and commemorative coinage, are without nominal value. The Mint is for private groups of visitors, unlike the other four mints in Germany, which are not accessible.