A number of variant decals can be found when examining original German Navy (Kriegsmarine) helmet insignia.  Several different producers were involved in manufacturing the insignia.  While some also printed German Army (Heer) images in the same likeness as those used for the Navy, many Kriegsmarine decals appear to have been produced exclusively for the Navy.  As a result, many of the images shown below are uncommon to the average collector.  Like all wartime decals, Kriegsmarine insignia was produced in water and lacquer based application formats.